Nexus File Manager
v2.0
π
Dashboard
β‘
System
π
βΊ
opt
βΊ
alt
βΊ
python27
βΊ
share
βΊ
doc
βΊ
alt-python27-alembic
βΊ
docs
Quick:
β¬οΈ Parent
π Root
π Home
π WWW
π Temp
βοΈ Etc
π€ Upload
π Create
β‘ WordPress Admin
π Refresh
βοΈ changelog.html
β Back
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Changelog — Alembic 0.8.3 documentation</title> <link rel="stylesheet" href="_static/nature_override.css" type="text/css" /> <link rel="stylesheet" href="_static/pygments.css" type="text/css" /> <link rel="stylesheet" href="_static/changelog.css" type="text/css" /> <link rel="stylesheet" href="_static/sphinx_paramlinks.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: './', VERSION: '0.8.3', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="_static/jquery.js"></script> <script type="text/javascript" src="_static/underscore.js"></script> <script type="text/javascript" src="_static/doctools.js"></script> <link rel="top" title="Alembic 0.8.3 documentation" href="index.html" /> <link rel="prev" title="DDL Internals" href="api/ddl.html" /> </head> <body role="document"> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="api/ddl.html" title="DDL Internals" accesskey="P">previous</a> |</li> <li class="nav-item nav-item-0"><a href="index.html">Alembic 0.8.3 documentation</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="changelog"> <h1>Changelog<a class="headerlink" href="#changelog" title="Permalink to this headline">ΒΆ</a></h1> <div class="section" id="change-0.8.3"> <h2>0.8.3<a class="headerlink" href="#change-0.8.3" title="Permalink to this headline">ΒΆ</a></h2> Released: October 16, 2015<div class="section" id="change-0.8.3-bug"> <h3>bug<a class="headerlink" href="#change-0.8.3-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.8.3-0"><span class="target" id="change-7d9e4e8e32939b01ec451e44167f5607"><strong>[bug] [autogenerate] </strong></span>Fixed an 0.8 regression whereby the “imports” dictionary member of the autogen context was removed; this collection is documented in the “render custom type” documentation as a place to add new imports. The member is now known as <a class="reference internal" href="api/autogenerate.html#alembic.autogenerate.api.AutogenContext.imports" title="alembic.autogenerate.api.AutogenContext.imports"><code class="xref py py-attr docutils literal"><span class="pre">AutogenContext.imports</span></code></a> and the documentation is repaired.<a class="changeset-link headerlink reference internal" href="#change-7d9e4e8e32939b01ec451e44167f5607">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/332/">#332</a></p> </p> </li> <li><p id="change-0.8.3-1"><span class="target" id="change-9ef6be6709e71f3800b6e451ae75c5f8"><strong>[bug] [batch] </strong></span>Fixed bug in batch mode where a table that had pre-existing indexes would create the same index on the new table with the same name, which on SQLite produces a naming conflict as index names are in a global namespace on that backend. Batch mode now defers the production of both existing and new indexes until after the entire table transfer operation is complete, which also means those indexes no longer take effect during the INSERT from SELECT section as well; the indexes are applied in a single step afterwards.<a class="changeset-link headerlink reference internal" href="#change-9ef6be6709e71f3800b6e451ae75c5f8">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/333/">#333</a></p> </p> </li> <li><p id="change-0.8.3-2"><span class="target" id="change-a859ff5818931ab962f46e2eaa8fe8fb"><strong>[bug] [tests] </strong></span>Added “pytest-xdist” as a tox dependency, so that the -n flag in the test command works if this is not already installed. Pull request courtesy Julien Danjou.<a class="changeset-link headerlink reference internal" href="#change-a859ff5818931ab962f46e2eaa8fe8fb">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/47">pull request bitbucket:47</a></p> </p> </li> <li><p id="change-0.8.3-3"><span class="target" id="change-f1ce3537f565a0627754e960e5ef6389"><strong>[bug] [postgresql] [autogenerate] </strong></span>Fixed issue in PG server default comparison where model-side defaults configured with Python unicode literals would leak the “u” character from a <code class="docutils literal"><span class="pre">repr()</span></code> into the SQL used for comparison, creating an invalid SQL expression, as the server-side comparison feature in PG currently repurposes the autogenerate Python rendering feature to get a quoted version of a plain string default.<a class="changeset-link headerlink reference internal" href="#change-f1ce3537f565a0627754e960e5ef6389">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/324/">#324</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.8.2"> <h2>0.8.2<a class="headerlink" href="#change-0.8.2" title="Permalink to this headline">ΒΆ</a></h2> Released: August 25, 2015<div class="section" id="change-0.8.2-bug"> <h3>bug<a class="headerlink" href="#change-0.8.2-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.8.2-0"><span class="target" id="change-04201961f35a53545533641443935f52"><strong>[bug] [autogenerate] </strong></span>Added workaround in new foreign key option detection feature for MySQL’s consideration of the “RESTRICT” option being the default, for which no value is reported from the database; the MySQL impl now corrects for when the model reports RESTRICT but the database reports nothing. A similar rule is in the default FK comparison to accommodate for the default “NO ACTION” setting being present in the model but not necessarily reported by the database, or vice versa.<a class="changeset-link headerlink reference internal" href="#change-04201961f35a53545533641443935f52">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/321/">#321</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.8.1"> <h2>0.8.1<a class="headerlink" href="#change-0.8.1" title="Permalink to this headline">ΒΆ</a></h2> Released: August 22, 2015<div class="section" id="change-0.8.1-feature"> <h3>feature<a class="headerlink" href="#change-0.8.1-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.8.1-0"><span class="target" id="change-33a7e29f698ee546a00a8637a6da8e0a"><strong>[feature] [autogenerate] </strong></span>A custom <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.process_revision_directives" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.process_revision_directives</span></code></a> hook can now generate op directives within the <a class="reference internal" href="api/operations.html#alembic.operations.ops.UpgradeOps" title="alembic.operations.ops.UpgradeOps"><code class="xref py py-class docutils literal"><span class="pre">UpgradeOps</span></code></a> and <a class="reference internal" href="api/operations.html#alembic.operations.ops.DowngradeOps" title="alembic.operations.ops.DowngradeOps"><code class="xref py py-class docutils literal"><span class="pre">DowngradeOps</span></code></a> containers that will be generated as Python code even when the <code class="docutils literal"><span class="pre">--autogenerate</span></code> flag is False; provided that <code class="docutils literal"><span class="pre">revision_environment=True</span></code>, the full render operation will be run even in “offline” mode.<a class="changeset-link headerlink reference internal" href="#change-33a7e29f698ee546a00a8637a6da8e0a">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.8.1-1"><span class="target" id="change-0fbe5d57da5d0fc69adb44615b46a83f"><strong>[feature] [autogenerate] </strong></span>Implemented support for autogenerate detection of changes in the <code class="docutils literal"><span class="pre">ondelete</span></code>, <code class="docutils literal"><span class="pre">onupdate</span></code>, <code class="docutils literal"><span class="pre">initially</span></code> and <code class="docutils literal"><span class="pre">deferrable</span></code> attributes of <code class="xref py py-class docutils literal"><span class="pre">ForeignKeyConstraint</span></code> objects on SQLAlchemy backends that support these on reflection (as of SQLAlchemy 1.0.8 currently Postgresql for all four, MySQL for <code class="docutils literal"><span class="pre">ondelete</span></code> and <code class="docutils literal"><span class="pre">onupdate</span></code> only). A constraint object that modifies these values will be reported as a “diff” and come out as a drop/create of the constraint with the modified values. The fields are ignored for backends which don’t reflect these attributes (as of SQLA 1.0.8 this includes SQLite, Oracle, SQL Server, others).<a class="changeset-link headerlink reference internal" href="#change-0fbe5d57da5d0fc69adb44615b46a83f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/317/">#317</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.8.1-bug"> <h3>bug<a class="headerlink" href="#change-0.8.1-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.8.1-2"><span class="target" id="change-7177e3bb51d5528e026f6e5ece6635d0"><strong>[bug] [autogenerate] </strong></span>Repaired the render operation for the <a class="reference internal" href="api/operations.html#alembic.operations.ops.AlterColumnOp" title="alembic.operations.ops.AlterColumnOp"><code class="xref py py-class docutils literal"><span class="pre">ops.AlterColumnOp</span></code></a> object to succeed when the “existing_type” field was not present.<a class="changeset-link headerlink reference internal" href="#change-7177e3bb51d5528e026f6e5ece6635d0">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.8.1-3"><span class="target" id="change-6efeaa9d5c7c3c9e5a9324b53289f374"><strong>[bug] [autogenerate] </strong></span>Fixed a regression 0.8 whereby the “multidb” environment template failed to produce independent migration script segments for the output template. This was due to the reorganization of the script rendering system for 0.8. To accommodate this change, the <a class="reference internal" href="api/operations.html#alembic.operations.ops.MigrationScript" title="alembic.operations.ops.MigrationScript"><code class="xref py py-class docutils literal"><span class="pre">MigrationScript</span></code></a> structure will in the case of multiple calls to <a class="reference internal" href="api/runtime.html#alembic.runtime.migration.MigrationContext.run_migrations" title="alembic.runtime.migration.MigrationContext.run_migrations"><code class="xref py py-meth docutils literal"><span class="pre">MigrationContext.run_migrations()</span></code></a> produce lists for the <a class="reference internal" href="api/operations.html#alembic.operations.ops.MigrationScript.upgrade_ops" title="alembic.operations.ops.MigrationScript.upgrade_ops"><code class="xref py py-attr docutils literal"><span class="pre">MigrationScript.upgrade_ops</span></code></a> and <a class="reference internal" href="api/operations.html#alembic.operations.ops.MigrationScript.downgrade_ops" title="alembic.operations.ops.MigrationScript.downgrade_ops"><code class="xref py py-attr docutils literal"><span class="pre">MigrationScript.downgrade_ops</span></code></a> attributes; each <a class="reference internal" href="api/operations.html#alembic.operations.ops.UpgradeOps" title="alembic.operations.ops.UpgradeOps"><code class="xref py py-class docutils literal"><span class="pre">UpgradeOps</span></code></a> and <a class="reference internal" href="api/operations.html#alembic.operations.ops.DowngradeOps" title="alembic.operations.ops.DowngradeOps"><code class="xref py py-class docutils literal"><span class="pre">DowngradeOps</span></code></a> instance keeps track of its own <code class="docutils literal"><span class="pre">upgrade_token</span></code> and <code class="docutils literal"><span class="pre">downgrade_token</span></code>, and each are rendered individually.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="api/autogenerate.html#autogen-customizing-multiengine-revision"><span>Revision Generation with Multiple Engines / run_migrations() calls</span></a> - additional detail on the workings of the <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.process_revision_directives" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.process_revision_directives</span></code></a> parameter when multiple calls to <a class="reference internal" href="api/runtime.html#alembic.runtime.migration.MigrationContext.run_migrations" title="alembic.runtime.migration.MigrationContext.run_migrations"><code class="xref py py-meth docutils literal"><span class="pre">MigrationContext.run_migrations()</span></code></a> are made.</p> </div> <a class="changeset-link headerlink reference internal" href="#change-6efeaa9d5c7c3c9e5a9324b53289f374">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/318/">#318</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.8.0"> <h2>0.8.0<a class="headerlink" href="#change-0.8.0" title="Permalink to this headline">ΒΆ</a></h2> Released: August 12, 2015<div class="section" id="change-0.8.0-feature"> <h3>feature<a class="headerlink" href="#change-0.8.0-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.8.0-0"><span class="target" id="change-6f7ad612c3971d2e335dfae3772c19e2"><strong>[feature] [commands] </strong></span>Added new command <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">edit</span></code>. This command takes the same arguments as <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">show</span></code>, however runs the target script file within $EDITOR. Makes use of the <code class="docutils literal"><span class="pre">python-editor</span></code> library in order to facilitate the handling of $EDITOR with reasonable default behaviors across platforms. Pull request courtesy Michel Albert.<a class="changeset-link headerlink reference internal" href="#change-6f7ad612c3971d2e335dfae3772c19e2">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/46">pull request bitbucket:46</a></p> </p> </li> <li><p id="change-0.8.0-1"><span class="target" id="change-901a190d686c8ec4db8eac0a54f3e24c"><strong>[feature] [commands] </strong></span>Added new multiple-capable argument <code class="docutils literal"><span class="pre">--depends-on</span></code> to the <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">revision</span></code> command, allowing <code class="docutils literal"><span class="pre">depends_on</span></code> to be established at the command line level rather than having to edit the file after the fact. <code class="docutils literal"><span class="pre">depends_on</span></code> identifiers may also be specified as branch names at the command line or directly within the migration file. The values may be specified as partial revision numbers from the command line which will be resolved to full revision numbers in the output file.<a class="changeset-link headerlink reference internal" href="#change-901a190d686c8ec4db8eac0a54f3e24c">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/311/">#311</a></p> </p> </li> <li><p id="change-0.8.0-2"><span class="target" id="change-6be53f9aa3f50b5cd853006ced350e9c"><strong>[feature] [tests] </strong></span>The default test runner via “python setup.py test” is now py.test. nose still works via run_tests.py.<a class="changeset-link headerlink reference internal" href="#change-6be53f9aa3f50b5cd853006ced350e9c">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.8.0-3"><span class="target" id="change-6769b6b1cdb16ea73ca0c5eefb5718bf"><strong>[feature] [operations] </strong></span>The internal system for Alembic operations has been reworked to now build upon an extensible system of operation objects. New operations can be added to the <code class="docutils literal"><span class="pre">op.</span></code> namespace, including that they are available in custom autogenerate schemes.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="api/operations.html#operation-plugins"><span>Operation Plugins</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-6769b6b1cdb16ea73ca0c5eefb5718bf">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/302/">#302</a></p> </p> </li> <li><p id="change-0.8.0-4"><span class="target" id="change-e308e49198036ceb6388349a30698e30"><strong>[feature] [autogenerate] </strong></span>The internal system for autogenerate been reworked to build upon the extensible system of operation objects present in <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/302/">#302</a>. As part of this change, autogenerate now produces a full object graph representing a list of migration scripts to be written as well as operation objects that will render all the Python code within them; a new hook <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.process_revision_directives" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.process_revision_directives</span></code></a> allows end-user code to fully customize what autogenerate will do, including not just full manipulation of the Python steps to take but also what file or files will be written and where. Additionally, autogenerate is now extensible as far as database objects compared and rendered into scripts; any new operation directive can also be registered into a series of hooks that allow custom database/model comparison functions to run as well as to render new operation directives into autogenerate scripts.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="api/autogenerate.html#alembic-autogenerate-toplevel"><span>Autogeneration</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-e308e49198036ceb6388349a30698e30">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/301/">#301</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/306/">#306</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.8.0-bug"> <h3>bug<a class="headerlink" href="#change-0.8.0-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.8.0-5"><span class="target" id="change-90cd5f97548a278d7629006845ea52a1"><strong>[bug] [batch] </strong></span>Fixed bug in batch mode where the <code class="docutils literal"><span class="pre">batch_op.create_foreign_key()</span></code> directive would be incorrectly rendered with the source table and schema names in the argument list.<a class="changeset-link headerlink reference internal" href="#change-90cd5f97548a278d7629006845ea52a1">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/315/">#315</a></p> </p> </li> <li><p id="change-0.8.0-6"><span class="target" id="change-7e12baac010418ff738f6fdbd6b8fe4c"><strong>[bug] [versioning] </strong></span>Fixed bug where in the erroneous case that alembic_version contains duplicate revisions, some commands would fail to process the version history correctly and end up with a KeyError. The fix allows the versioning logic to proceed, however a clear error is emitted later when attempting to update the alembic_version table.<a class="changeset-link headerlink reference internal" href="#change-7e12baac010418ff738f6fdbd6b8fe4c">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/314/">#314</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.8.0-misc"> <h3>misc<a class="headerlink" href="#change-0.8.0-misc" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.8.0-7"><span class="target" id="change-1b8b04274957914b974cc92cf06abd19"><strong>[operations] [change] </strong></span>A range of positional argument names have been changed to be clearer and more consistent across methods within the <a class="reference internal" href="ops.html#alembic.operations.Operations" title="alembic.operations.Operations"><code class="xref py py-class docutils literal"><span class="pre">Operations</span></code></a> namespace. The most prevalent form of name change is that the descriptive names <code class="docutils literal"><span class="pre">constraint_name</span></code> and <code class="docutils literal"><span class="pre">table_name</span></code> are now used where previously the name <code class="docutils literal"><span class="pre">name</span></code> would be used. This is in support of the newly modularized and extensible system of operation objects in <a class="reference internal" href="api/operations.html#module-alembic.operations.ops" title="alembic.operations.ops"><code class="xref py py-mod docutils literal"><span class="pre">alembic.operations.ops</span></code></a>. An argument translation layer is in place across the <code class="docutils literal"><span class="pre">alembic.op</span></code> namespace that will ensure that named argument calling styles that use the old names will continue to function by transparently translating to the new names, also emitting a warning. This, along with the fact that these arguments are positional in any case and aren’t normally passed with an explicit name, should ensure that the overwhelming majority of applications should be unaffected by this change. The <em>only</em> applications that are impacted are those that:<ol class="arabic"> <li>use the <a class="reference internal" href="ops.html#alembic.operations.Operations" title="alembic.operations.Operations"><code class="xref py py-class docutils literal"><span class="pre">Operations</span></code></a> object directly in some way, rather than calling upon the <code class="docutils literal"><span class="pre">alembic.op</span></code> namespace, and</li> <li>invoke the methods on <a class="reference internal" href="ops.html#alembic.operations.Operations" title="alembic.operations.Operations"><code class="xref py py-class docutils literal"><span class="pre">Operations</span></code></a> using named keyword arguments for positional arguments like <code class="docutils literal"><span class="pre">table_name</span></code>, <code class="docutils literal"><span class="pre">constraint_name</span></code>, etc., which commonly were named <code class="docutils literal"><span class="pre">name</span></code> as of 0.7.6.</li> <li>any application that is using named keyword arguments in place of positional argument for the recently added <a class="reference internal" href="ops.html#alembic.operations.BatchOperations" title="alembic.operations.BatchOperations"><code class="xref py py-class docutils literal"><span class="pre">BatchOperations</span></code></a> object may also be affected.</li> </ol> <p>The naming changes are documented as “versionchanged” for 0.8.0:</p> <ul> <li><a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_check_constraint" title="alembic.operations.BatchOperations.create_check_constraint"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_check_constraint()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_foreign_key" title="alembic.operations.BatchOperations.create_foreign_key"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_foreign_key()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_index" title="alembic.operations.BatchOperations.create_index"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_index()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_unique_constraint" title="alembic.operations.BatchOperations.create_unique_constraint"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_unique_constraint()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.BatchOperations.drop_constraint" title="alembic.operations.BatchOperations.drop_constraint"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.drop_constraint()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.BatchOperations.drop_index" title="alembic.operations.BatchOperations.drop_index"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.drop_index()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.create_check_constraint" title="alembic.operations.Operations.create_check_constraint"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_check_constraint()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.create_foreign_key" title="alembic.operations.Operations.create_foreign_key"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_foreign_key()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.create_primary_key" title="alembic.operations.Operations.create_primary_key"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_primary_key()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.create_index" title="alembic.operations.Operations.create_index"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_index()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.create_table" title="alembic.operations.Operations.create_table"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_table()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.create_unique_constraint" title="alembic.operations.Operations.create_unique_constraint"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_unique_constraint()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.drop_constraint" title="alembic.operations.Operations.drop_constraint"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_constraint()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.drop_index" title="alembic.operations.Operations.drop_index"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_index()</span></code></a></li> <li><a class="reference internal" href="ops.html#alembic.operations.Operations.drop_table" title="alembic.operations.Operations.drop_table"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_table()</span></code></a></li> </ul> <a class="changeset-link headerlink reference internal" href="#change-1b8b04274957914b974cc92cf06abd19">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.7"> <h2>0.7.7<a class="headerlink" href="#change-0.7.7" title="Permalink to this headline">ΒΆ</a></h2> Released: July 22, 2015<div class="section" id="change-0.7.7-feature"> <h3>feature<a class="headerlink" href="#change-0.7.7-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.7-0"><span class="target" id="change-5345e62733890d1bc611663400d27894"><strong>[feature] [batch] </strong></span>Implemented support for <a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_primary_key" title="alembic.operations.BatchOperations.create_primary_key"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_primary_key()</span></code></a> and <a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_check_constraint" title="alembic.operations.BatchOperations.create_check_constraint"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_check_constraint()</span></code></a>. Additionally, table keyword arguments are copied from the original reflected table, such as the “mysql_engine” keyword argument.<a class="changeset-link headerlink reference internal" href="#change-5345e62733890d1bc611663400d27894">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/305/">#305</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.7.7-bug"> <h3>bug<a class="headerlink" href="#change-0.7.7-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.7-1"><span class="target" id="change-23781d425a6142eb7f28c01de4fc04f9"><strong>[bug] [versioning] </strong></span>Fixed critical issue where a complex series of branches/merges would bog down the iteration algorithm working over redundant nodes for millions of cycles. An internal adjustment has been made so that duplicate nodes are skipped within this iteration.<a class="changeset-link headerlink reference internal" href="#change-23781d425a6142eb7f28c01de4fc04f9">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/310/">#310</a></p> </p> </li> <li><p id="change-0.7.7-2"><span class="target" id="change-1fc11f1c8d36220cd82da7798a07e6da"><strong>[bug] [environment] </strong></span>The <a class="reference internal" href="api/runtime.html#alembic.runtime.migration.MigrationContext.stamp" title="alembic.runtime.migration.MigrationContext.stamp"><code class="xref py py-meth docutils literal"><span class="pre">MigrationContext.stamp()</span></code></a> method, added as part of the versioning refactor in 0.7 as a more granular version of <a class="reference internal" href="api/commands.html#alembic.command.stamp" title="alembic.command.stamp"><code class="xref py py-func docutils literal"><span class="pre">command.stamp()</span></code></a>, now includes the “create the alembic_version table if not present” step in the same way as the command version, which was previously omitted.<a class="changeset-link headerlink reference internal" href="#change-1fc11f1c8d36220cd82da7798a07e6da">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/300/">#300</a></p> </p> </li> <li><p id="change-0.7.7-3"><span class="target" id="change-f921a88332077dbbbcb670c73ba95dbf"><strong>[bug] [autogenerate] </strong></span>Fixed bug where foreign key options including “onupdate”, “ondelete” would not render within the <code class="docutils literal"><span class="pre">op.create_foreign_key()</span></code> directive, even though they render within a full <code class="docutils literal"><span class="pre">ForeignKeyConstraint</span></code> directive.<a class="changeset-link headerlink reference internal" href="#change-f921a88332077dbbbcb670c73ba95dbf">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/298/">#298</a></p> </p> </li> <li><p id="change-0.7.7-4"><span class="target" id="change-015aee500693ad1802612dda63adf04c"><strong>[bug] [tests] </strong></span>Repaired warnings that occur when running unit tests against SQLAlchemy 1.0.5 or greater involving the “legacy_schema_aliasing” flag.<a class="changeset-link headerlink reference internal" href="#change-015aee500693ad1802612dda63adf04c">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.6"> <h2>0.7.6<a class="headerlink" href="#change-0.7.6" title="Permalink to this headline">ΒΆ</a></h2> Released: May 5, 2015<div class="section" id="change-0.7.6-feature"> <h3>feature<a class="headerlink" href="#change-0.7.6-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.6-0"><span class="target" id="change-03efca581ba1c07c8338bb99bcbf4739"><strong>[feature] [versioning] </strong></span>Fixed bug where the case of multiple mergepoints that all have the identical set of ancestor revisions would fail to be upgradable, producing an assertion failure. Merge points were previously assumed to always require at least an UPDATE in alembic_revision from one of the previous revs to the new one, however in this case, if one of the mergepoints has already been reached, the remaining mergepoints have no row to UPDATE therefore they must do an INSERT of their target version.<a class="changeset-link headerlink reference internal" href="#change-03efca581ba1c07c8338bb99bcbf4739">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/297/">#297</a></p> </p> </li> <li><p id="change-0.7.6-1"><span class="target" id="change-27e4a2489a4ce0f2c626c9543267f2d9"><strong>[feature] [autogenerate] </strong></span>Added support for type comparison functions to be not just per environment, but also present on the custom types themselves, by supplying a method <code class="docutils literal"><span class="pre">compare_against_backend</span></code>. Added a new documentation section <a class="reference internal" href="autogenerate.html#compare-types"><span>Comparing Types</span></a> describing type comparison fully.<a class="changeset-link headerlink reference internal" href="#change-27e4a2489a4ce0f2c626c9543267f2d9">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/296/">#296</a></p> </p> </li> <li><p id="change-0.7.6-2"><span class="target" id="change-063d0f4120250ad1ef764e5f81488242"><strong>[feature] [operations] </strong></span>Added a new option <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.literal_binds" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.literal_binds</span></code></a>, which will pass the <code class="docutils literal"><span class="pre">literal_binds</span></code> flag into the compilation of SQL constructs when using “offline” mode. This has the effect that SQL objects like inserts, updates, deletes as well as textual statements sent using <code class="docutils literal"><span class="pre">text()</span></code> will be compiled such that the dialect will attempt to render literal values “inline” automatically. Only a subset of types is typically supported; the <a class="reference internal" href="ops.html#alembic.operations.Operations.inline_literal" title="alembic.operations.Operations.inline_literal"><code class="xref py py-meth docutils literal"><span class="pre">Operations.inline_literal()</span></code></a> construct remains as the construct used to force a specific literal representation of a value. The <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.literal_binds" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.literal_binds</span></code></a> flag is added to the “offline” section of the <code class="docutils literal"><span class="pre">env.py</span></code> files generated in new environments.<a class="changeset-link headerlink reference internal" href="#change-063d0f4120250ad1ef764e5f81488242">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/255/">#255</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.7.6-bug"> <h3>bug<a class="headerlink" href="#change-0.7.6-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.6-3"><span class="target" id="change-84e0c8c6a21044248b8be616265e22ae"><strong>[bug] [batch] </strong></span>Fully implemented the <a class="reference internal" href="ops.html#alembic.operations.Operations.batch_alter_table.params.copy_from" title="alembic.operations.Operations.batch_alter_table"><code class="xref py py-paramref docutils literal"><span class="pre">copy_from</span></code></a> parameter for batch mode, which previously was not functioning. This allows “batch mode” to be usable in conjunction with <code class="docutils literal"><span class="pre">--sql</span></code>.<a class="changeset-link headerlink reference internal" href="#change-84e0c8c6a21044248b8be616265e22ae">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/289/">#289</a></p> </p> </li> <li><p id="change-0.7.6-4"><span class="target" id="change-7359836ab17b432f3cde6ce1a7c3c7e4"><strong>[bug] [batch] </strong></span>Repaired support for the <a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_index" title="alembic.operations.BatchOperations.create_index"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_index()</span></code></a> directive, which was mis-named internally such that the operation within a batch context could not proceed. The create index operation will proceed as part of a larger “batch table recreate” operation only if <a class="reference internal" href="ops.html#alembic.operations.Operations.batch_alter_table.params.recreate" title="alembic.operations.Operations.batch_alter_table"><code class="xref py py-paramref docutils literal"><span class="pre">recreate</span></code></a> is set to “always”, or if the batch operation includes other instructions that require a table recreate.<a class="changeset-link headerlink reference internal" href="#change-7359836ab17b432f3cde6ce1a7c3c7e4">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/287/">#287</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.5"> <h2>0.7.5<a class="headerlink" href="#change-0.7.5" title="Permalink to this headline">ΒΆ</a></h2> Released: March 19, 2015<div class="section" id="change-0.7.5-feature"> <h3>feature<a class="headerlink" href="#change-0.7.5-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.5-0"><span class="target" id="change-68f4a04edd159fbf2501a823d67df2ab"><strong>[feature] [commands] </strong></span>Added a new feature <a class="reference internal" href="api/config.html#alembic.config.Config.attributes" title="alembic.config.Config.attributes"><code class="xref py py-attr docutils literal"><span class="pre">Config.attributes</span></code></a>, to help with the use case of sharing state such as engines and connections on the outside with a series of Alembic API calls; also added a new cookbook section to describe this simple but pretty important use case.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="cookbook.html#connection-sharing"><span>Sharing a Connection with a Series of Migration Commands and Environments</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-68f4a04edd159fbf2501a823d67df2ab">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.5-1"><span class="target" id="change-32867b9a86ca1c3e6a5efc5018ad967d"><strong>[feature] [environment] </strong></span>The format of the default <code class="docutils literal"><span class="pre">env.py</span></code> script has been refined a bit; it now uses context managers not only for the scope of the transaction, but also for connectivity from the starting engine. The engine is also now called a “connectable” in support of the use case of an external connection being passed in.<a class="changeset-link headerlink reference internal" href="#change-32867b9a86ca1c3e6a5efc5018ad967d">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.5-2"><span class="target" id="change-c517f2fafe0e5fa9ea5d277d0b0cb91f"><strong>[feature] [versioning] </strong></span>Added support for “alembic stamp” to work when given “heads” as an argument, when multiple heads are present.<a class="changeset-link headerlink reference internal" href="#change-c517f2fafe0e5fa9ea5d277d0b0cb91f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/267/">#267</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.7.5-bug"> <h3>bug<a class="headerlink" href="#change-0.7.5-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.5-3"><span class="target" id="change-1b8448bdb477b9f3d222f3e43af1028b"><strong>[bug] [autogenerate] </strong></span>The <code class="docutils literal"><span class="pre">--autogenerate</span></code> option is not valid when used in conjunction with “offline” mode, e.g. <code class="docutils literal"><span class="pre">--sql</span></code>. This now raises a <code class="docutils literal"><span class="pre">CommandError</span></code>, rather than failing more deeply later on. Pull request courtesy Johannes Erdfelt.<a class="changeset-link headerlink reference internal" href="#change-1b8448bdb477b9f3d222f3e43af1028b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/266/">#266</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/39">pull request bitbucket:39</a></p> </p> </li> <li><p id="change-0.7.5-4"><span class="target" id="change-95b87d2b0273197c862d01665bc26128"><strong>[bug] [operations] [mssql] </strong></span>Fixed bug where the mssql DROP COLUMN directive failed to include modifiers such as “schema” when emitting the DDL.<a class="changeset-link headerlink reference internal" href="#change-95b87d2b0273197c862d01665bc26128">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/284/">#284</a></p> </p> </li> <li><p id="change-0.7.5-5"><span class="target" id="change-c128649439c1d280c9b07e878a8fc24f"><strong>[bug] [postgresql] [autogenerate] </strong></span>Postgresql “functional” indexes are necessarily skipped from the autogenerate process, as the SQLAlchemy backend currently does not support reflection of these structures. A warning is emitted both from the SQLAlchemy backend as well as from the Alembic backend for Postgresql when such an index is detected.<a class="changeset-link headerlink reference internal" href="#change-c128649439c1d280c9b07e878a8fc24f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/282/">#282</a></p> </p> </li> <li><p id="change-0.7.5-6"><span class="target" id="change-40b43f94dca3aeee601dd90579335cb6"><strong>[bug] [autogenerate] [mysql] </strong></span>Fixed bug where MySQL backend would report dropped unique indexes and/or constraints as both at the same time. This is because MySQL doesn’t actually have a “unique constraint” construct that reports differently than a “unique index”, so it is present in both lists. The net effect though is that the MySQL backend will report a dropped unique index/constraint as an index in cases where the object was first created as a unique constraint, if no other information is available to make the decision. This differs from other backends like Postgresql which can report on unique constraints and unique indexes separately.<a class="changeset-link headerlink reference internal" href="#change-40b43f94dca3aeee601dd90579335cb6">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/276/">#276</a></p> </p> </li> <li><p id="change-0.7.5-7"><span class="target" id="change-672bde6a4d0c6039a492706b5457d46b"><strong>[bug] [commands] </strong></span>Fixed bug where using a partial revision identifier as the “starting revision” in <code class="docutils literal"><span class="pre">--sql</span></code> mode in a downgrade operation would fail to resolve properly.<p>As a side effect of this change, the <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.get_starting_revision_argument" title="alembic.runtime.environment.EnvironmentContext.get_starting_revision_argument"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.get_starting_revision_argument()</span></code></a> method will return the “starting” revision in its originally- given “partial” form in all cases, whereas previously when running within the <code class="xref py py-meth docutils literal"><span class="pre">command.stamp()</span></code> command, it would have been resolved to a full number before passing it to the <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext" title="alembic.runtime.environment.EnvironmentContext"><code class="xref py py-class docutils literal"><span class="pre">EnvironmentContext</span></code></a>. The resolution of this value to a real revision number has basically been moved to a more fundamental level within the offline migration process.</p> <a class="changeset-link headerlink reference internal" href="#change-672bde6a4d0c6039a492706b5457d46b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/269/">#269</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.4"> <h2>0.7.4<a class="headerlink" href="#change-0.7.4" title="Permalink to this headline">ΒΆ</a></h2> Released: January 12, 2015<div class="section" id="change-0.7.4-bug"> <h3>bug<a class="headerlink" href="#change-0.7.4-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.4-0"><span class="target" id="change-67b3d80132e3657ea4c9993c2d4f587d"><strong>[bug] [postgresql] [autogenerate] </strong></span>Repaired issue where a server default specified without <code class="docutils literal"><span class="pre">text()</span></code> that represented a numeric or floating point (e.g. with decimal places) value would fail in the Postgresql-specific check for “compare server default”; as PG accepts the value with quotes in the table specification, it’s still valid. Pull request courtesy Dimitris Theodorou.<a class="changeset-link headerlink reference internal" href="#change-67b3d80132e3657ea4c9993c2d4f587d">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/241/">#241</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/37">pull request bitbucket:37</a></p> </p> </li> <li><p id="change-0.7.4-1"><span class="target" id="change-aa7772b6ea7a40a10180856865c276cc"><strong>[bug] [autogenerate] </strong></span>The rendering of a <a class="reference external" href="http://www.sqlalchemy.org/docs/core/constraints.html#sqlalchemy.schema.ForeignKeyConstraint" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">ForeignKeyConstraint</span></code></a> will now ensure that the names of the source and target columns are the database-side name of each column, and not the value of the <code class="docutils literal"><span class="pre">.key</span></code> attribute as may be set only on the Python side. This is because Alembic generates the DDL for constraints as standalone objects without the need to actually refer to an in-Python <a class="reference external" href="http://www.sqlalchemy.org/docs/core/metadata.html#sqlalchemy.schema.Table" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">Table</span></code></a> object, so there’s no step that would resolve these Python-only key names to database column names.<a class="changeset-link headerlink reference internal" href="#change-aa7772b6ea7a40a10180856865c276cc">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/259/">#259</a></p> </p> </li> <li><p id="change-0.7.4-2"><span class="target" id="change-1c70cc234b1cac2257cb8eb77879955e"><strong>[bug] [autogenerate] </strong></span>Fixed bug in foreign key autogenerate where if the in-Python table used custom column keys (e.g. using the <code class="docutils literal"><span class="pre">key='foo'</span></code> kwarg to <code class="docutils literal"><span class="pre">Column</span></code>), the comparison of existing foreign keys to those specified in the metadata would fail, as the reflected table would not have these keys available which to match up. Foreign key comparison for autogenerate now ensures it’s looking at the database-side names of the columns in all cases; this matches the same functionality within unique constraints and indexes.<a class="changeset-link headerlink reference internal" href="#change-1c70cc234b1cac2257cb8eb77879955e">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/260/">#260</a></p> </p> </li> <li><p id="change-0.7.4-3"><span class="target" id="change-4deef0362ad86b8e59c1929b45ec8882"><strong>[bug] [autogenerate] </strong></span>Fixed issue in autogenerate type rendering where types that belong to modules that have the name “sqlalchemy” in them would be mistaken as being part of the <code class="docutils literal"><span class="pre">sqlalchemy.</span></code> namespace. Pull req courtesy Bartosz Burclaf.<a class="changeset-link headerlink reference internal" href="#change-4deef0362ad86b8e59c1929b45ec8882">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/261/">#261</a>, <a class="reference external" href="https://github.com/zzzeek/alembic/pull/17">pull request github:17</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.3"> <h2>0.7.3<a class="headerlink" href="#change-0.7.3" title="Permalink to this headline">ΒΆ</a></h2> Released: December 30, 2014<div class="section" id="change-0.7.3-bug"> <h3>bug<a class="headerlink" href="#change-0.7.3-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.3-0"><span class="target" id="change-d7f431254183a5ab8d99d6360a4f00ed"><strong>[bug] [versioning] </strong></span>Fixed regression in new versioning system where upgrade / history operation would fail on AttributeError if no version files were present at all.<a class="changeset-link headerlink reference internal" href="#change-d7f431254183a5ab8d99d6360a4f00ed">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/258/">#258</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.2"> <h2>0.7.2<a class="headerlink" href="#change-0.7.2" title="Permalink to this headline">ΒΆ</a></h2> Released: December 18, 2014<div class="section" id="change-0.7.2-bug"> <h3>bug<a class="headerlink" href="#change-0.7.2-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.2-0"><span class="target" id="change-e7cd4687841cf3188b3bb304746e93d3"><strong>[bug] [sqlite] [autogenerate] </strong></span>Adjusted the SQLite backend regarding autogen of unique constraints to work fully with the current SQLAlchemy 1.0, which now will report on UNIQUE constraints that have no name.<a class="changeset-link headerlink reference internal" href="#change-e7cd4687841cf3188b3bb304746e93d3">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.2-1"><span class="target" id="change-1c850c3af41ce4e37db0115c54ab7207"><strong>[bug] [batch] </strong></span>Fixed bug in batch where if the target table contained multiple foreign keys to the same target table, the batch mechanics would fail with a “table already exists” error. Thanks for the help on this from Lucas Kahlert.<a class="changeset-link headerlink reference internal" href="#change-1c850c3af41ce4e37db0115c54ab7207">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/254/">#254</a></p> </p> </li> <li><p id="change-0.7.2-2"><span class="target" id="change-eab1b8d1275c880ff0119018f4754bd0"><strong>[bug] [mysql] </strong></span>Fixed an issue where the MySQL routine to skip foreign-key-implicit indexes would also catch unnamed unique indexes, as they would be named after the column and look like the FK indexes. Pull request courtesy Johannes Erdfelt.<a class="changeset-link headerlink reference internal" href="#change-eab1b8d1275c880ff0119018f4754bd0">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/251/">#251</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/35">pull request bitbucket:35</a></p> </p> </li> <li><p id="change-0.7.2-3"><span class="target" id="change-331f7c3132dbc3d8bc7fa5ad308bca8d"><strong>[bug] [oracle] [mssql] </strong></span>Repaired a regression in both the MSSQL and Oracle dialects whereby the overridden <code class="docutils literal"><span class="pre">_exec()</span></code> method failed to return a value, as is needed now in the 0.7 series.<a class="changeset-link headerlink reference internal" href="#change-331f7c3132dbc3d8bc7fa5ad308bca8d">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/253/">#253</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.1"> <h2>0.7.1<a class="headerlink" href="#change-0.7.1" title="Permalink to this headline">ΒΆ</a></h2> Released: December 3, 2014<div class="section" id="change-0.7.1-feature"> <h3>feature<a class="headerlink" href="#change-0.7.1-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.1-0"><span class="target" id="change-d6c235651452d863922773adcfa217e6"><strong>[feature] [autogenerate] </strong></span>Support for autogenerate of FOREIGN KEY constraints has been added. These are delivered within the autogenerate process in the same manner as UNIQUE constraints, including <code class="docutils literal"><span class="pre">include_object</span></code> support. Big thanks to Ann Kamyshnikova for doing the heavy lifting here.<a class="changeset-link headerlink reference internal" href="#change-d6c235651452d863922773adcfa217e6">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/178/">#178</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/32">pull request bitbucket:32</a></p> </p> </li> <li><p id="change-0.7.1-1"><span class="target" id="change-fbaf6763200b1b917216a3f7e2d35701"><strong>[feature] [batch] </strong></span>Added <a class="reference internal" href="ops.html#alembic.operations.Operations.batch_alter_table.params.naming_convention" title="alembic.operations.Operations.batch_alter_table"><code class="xref py py-paramref docutils literal"><span class="pre">naming_convention</span></code></a> argument to <a class="reference internal" href="ops.html#alembic.operations.Operations.batch_alter_table" title="alembic.operations.Operations.batch_alter_table"><code class="xref py py-meth docutils literal"><span class="pre">Operations.batch_alter_table()</span></code></a>, as this is necessary in order to drop foreign key constraints; these are often unnamed on the target database, and in the case that they are named, SQLAlchemy is as of the 0.9 series not including these names yet.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="batch.html#dropping-sqlite-foreign-keys"><span>Dropping Unnamed or Named Foreign Key Constraints</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-fbaf6763200b1b917216a3f7e2d35701">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.1-2"><span class="target" id="change-d668b1bb4150b06a3caa876ddc16a352"><strong>[feature] [batch] </strong></span>Added two new arguments <a class="reference internal" href="ops.html#alembic.operations.Operations.batch_alter_table.params.reflect_args" title="alembic.operations.Operations.batch_alter_table"><code class="xref py py-paramref docutils literal"><span class="pre">Operations.batch_alter_table.reflect_args</span></code></a> and <a class="reference internal" href="ops.html#alembic.operations.Operations.batch_alter_table.params.reflect_kwargs" title="alembic.operations.Operations.batch_alter_table"><code class="xref py py-paramref docutils literal"><span class="pre">Operations.batch_alter_table.reflect_kwargs</span></code></a>, so that arguments may be passed directly to suit the <a class="reference external" href="http://www.sqlalchemy.org/docs/core/metadata.html#sqlalchemy.schema.Table" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">Table</span></code></a> object that will be reflected.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="batch.html#batch-controlling-table-reflection"><span>Controlling Table Reflection</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-d668b1bb4150b06a3caa876ddc16a352">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.7.1-bug"> <h3>bug<a class="headerlink" href="#change-0.7.1-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.1-3"><span class="target" id="change-417d8d55b2461360d5810789eb5e58c8"><strong>[bug] [batch] </strong></span>The <code class="docutils literal"><span class="pre">render_as_batch</span></code> flag was inadvertently hardcoded to <code class="docutils literal"><span class="pre">True</span></code>, so all autogenerates were spitting out batch mode...this has been fixed so that batch mode again is only when selected in env.py.<a class="changeset-link headerlink reference internal" href="#change-417d8d55b2461360d5810789eb5e58c8">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.1-4"><span class="target" id="change-19a6d3c26f2c15f65fec9642ffaf430c"><strong>[bug] [batch] </strong></span>Fixed bug where the “source_schema” argument was not correctly passed when calling <a class="reference internal" href="ops.html#alembic.operations.BatchOperations.create_foreign_key" title="alembic.operations.BatchOperations.create_foreign_key"><code class="xref py py-meth docutils literal"><span class="pre">BatchOperations.create_foreign_key()</span></code></a>. Pull request courtesy Malte Marquarding.<a class="changeset-link headerlink reference internal" href="#change-19a6d3c26f2c15f65fec9642ffaf430c">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/34">pull request bitbucket:34</a></p> </p> </li> <li><p id="change-0.7.1-5"><span class="target" id="change-807ac0ed86f33666dd974ceec6c242ca"><strong>[bug] [batch] </strong></span>Repaired the inspection, copying and rendering of CHECK constraints and so-called “schema” types such as Boolean, Enum within the batch copy system; the CHECK constraint will not be “doubled” when the table is copied, and additionally the inspection of the CHECK constraint for its member columns will no longer fail with an attribute error.<a class="changeset-link headerlink reference internal" href="#change-807ac0ed86f33666dd974ceec6c242ca">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/249/">#249</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.7.0"> <h2>0.7.0<a class="headerlink" href="#change-0.7.0" title="Permalink to this headline">ΒΆ</a></h2> Released: November 24, 2014<div class="section" id="change-0.7.0-changed"> <h3>changed<a class="headerlink" href="#change-0.7.0-changed" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.0-0"><span class="target" id="change-d29da7e6769afa23c882b725af8463df"><strong>[changed] [commands] </strong></span>The <code class="docutils literal"><span class="pre">--head_only</span></code> option to the <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">current</span></code> command is deprecated; the <code class="docutils literal"><span class="pre">current</span></code> command now lists just the version numbers alone by default; use <code class="docutils literal"><span class="pre">--verbose</span></code> to get at additional output.<a class="changeset-link headerlink reference internal" href="#change-d29da7e6769afa23c882b725af8463df">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.0-1"><span class="target" id="change-87498973d80028689b298195ab000c27"><strong>[changed] [autogenerate] </strong></span>The default value of the <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.user_module_prefix" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.user_module_prefix</span></code></a> parameter is <strong>no longer the same as the SQLAlchemy prefix</strong>. When omitted, user-defined types will now use the <code class="docutils literal"><span class="pre">__module__</span></code> attribute of the type class itself when rendering in an autogenerated module.<a class="changeset-link headerlink reference internal" href="#change-87498973d80028689b298195ab000c27">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/229/">#229</a></p> </p> </li> <li><p id="change-0.7.0-2"><span class="target" id="change-f27953254386cf132a96ce79b2c0cb0b"><strong>[changed] [compatibility] </strong></span>Minimum SQLAlchemy version is now 0.7.6, however at least 0.8.4 is strongly recommended. The overhaul of the test suite allows for fully passing tests on all SQLAlchemy versions from 0.7.6 on forward.<a class="changeset-link headerlink reference internal" href="#change-f27953254386cf132a96ce79b2c0cb0b">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.7.0-feature"> <h3>feature<a class="headerlink" href="#change-0.7.0-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.0-3"><span class="target" id="change-a34444a70439195e84311f01f6b0ee1b"><strong>[feature] [versioning] </strong></span>The “multiple heads / branches” feature has now landed. This is by far the most significant change Alembic has seen since its inception; while the workflow of most commands hasn’t changed, and the format of version files and the <code class="docutils literal"><span class="pre">alembic_version</span></code> table are unchanged as well, a new suite of features opens up in the case where multiple version files refer to the same parent, or to the “base”. Merging of branches, operating across distinct named heads, and multiple independent bases are now all supported. The feature incurs radical changes to the internals of versioning and traversal, and should be treated as “beta mode” for the next several subsequent releases within 0.7.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><span class="xref std std-ref">branches</span></p> </div> <a class="changeset-link headerlink reference internal" href="#change-a34444a70439195e84311f01f6b0ee1b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/167/">#167</a></p> </p> </li> <li><p id="change-0.7.0-4"><span class="target" id="change-0c25b7600787adc0f81611e49788d3de"><strong>[feature] [versioning] </strong></span>In conjunction with support for multiple independent bases, the specific version directories are now also configurable to include multiple, user-defined directories. When multiple directories exist, the creation of a revision file with no down revision requires that the starting directory is indicated; the creation of subsequent revisions along that lineage will then automatically use that directory for new files.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="branches.html#multiple-version-directories"><span>Setting up Multiple Version Directories</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-0c25b7600787adc0f81611e49788d3de">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/124/">#124</a></p> </p> </li> <li><p id="change-0.7.0-5"><span class="target" id="change-db6f85bc76d41e8f551d4011bb3c4168"><strong>[feature] [operations] [sqlite] </strong></span>Added “move and copy” workflow, where a table to be altered is copied to a new one with the new structure and the old one dropped, is now implemented for SQLite as well as all database backends in general using the new <a class="reference internal" href="ops.html#alembic.operations.Operations.batch_alter_table" title="alembic.operations.Operations.batch_alter_table"><code class="xref py py-meth docutils literal"><span class="pre">Operations.batch_alter_table()</span></code></a> system. This directive provides a table-specific operations context which gathers column- and constraint-level mutations specific to that table, and at the end of the context creates a new table combining the structure of the old one with the given changes, copies data from old table to new, and finally drops the old table, renaming the new one to the existing name. This is required for fully featured SQLite migrations, as SQLite has very little support for the traditional ALTER directive. The batch directive is intended to produce code that is still compatible with other databases, in that the “move and copy” process only occurs for SQLite by default, while still providing some level of sanity to SQLite’s requirement by allowing multiple table mutation operations to proceed within one “move and copy” as well as providing explicit control over when this operation actually occurs. The “move and copy” feature may be optionally applied to other backends as well, however dealing with referential integrity constraints from other tables must still be handled explicitly.<div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="batch.html#batch-migrations"><span>Running “Batch” Migrations for SQLite and Other Databases</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-db6f85bc76d41e8f551d4011bb3c4168">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/21/">#21</a></p> </p> </li> <li><p id="change-0.7.0-6"><span class="target" id="change-dec3009a090c21082e7f576b0a4653a4"><strong>[feature] [commands] </strong></span>Relative revision identifiers as used with <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">upgrade</span></code>, <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">downgrade</span></code> and <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">history</span></code> can be combined with specific revisions as well, e.g. <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">upgrade</span> <span class="pre">ae10+3</span></code>, to produce a migration target relative to the given exact version.<a class="changeset-link headerlink reference internal" href="#change-dec3009a090c21082e7f576b0a4653a4">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.0-7"><span class="target" id="change-4efddca1a4935691140cffea05fbb63c"><strong>[feature] [commands] </strong></span>New commands added: <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">show</span></code>, <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">heads</span></code> and <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">merge</span></code>. Also, a new option <code class="docutils literal"><span class="pre">--verbose</span></code> has been added to several informational commands, such as <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">history</span></code>, <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">current</span></code>, <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">branches</span></code>, and <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">heads</span></code>. <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">revision</span></code> also contains several new options used within the new branch management system. The output of commands has been altered in many cases to support new fields and attributes; the <code class="docutils literal"><span class="pre">history</span></code> command in particular now returns it’s “verbose” output only if <code class="docutils literal"><span class="pre">--verbose</span></code> is sent; without this flag it reverts to it’s older behavior of short line items (which was never changed in the docs).<a class="changeset-link headerlink reference internal" href="#change-4efddca1a4935691140cffea05fbb63c">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.7.0-8"><span class="target" id="change-3ad5c14959029aa2a8dc9c4b443cd625"><strong>[feature] [config] </strong></span>Added new argument <a class="reference internal" href="api/config.html#alembic.config.Config.params.config_args" title="alembic.config.Config"><code class="xref py py-paramref docutils literal"><span class="pre">Config.config_args</span></code></a>, allows a dictionary of replacement variables to be passed which will serve as substitution values when an API-produced <a class="reference internal" href="api/config.html#alembic.config.Config" title="alembic.config.Config"><code class="xref py py-class docutils literal"><span class="pre">Config</span></code></a> consumes the <code class="docutils literal"><span class="pre">.ini</span></code> file. Pull request courtesy Noufal Ibrahim.<a class="changeset-link headerlink reference internal" href="#change-3ad5c14959029aa2a8dc9c4b443cd625">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/33">pull request bitbucket:33</a></p> </p> </li> <li><p id="change-0.7.0-9"><span class="target" id="change-1ab0d6e9d0e6ec90e38ef38bb47269b4"><strong>[feature] [operations] </strong></span>The <a class="reference external" href="http://www.sqlalchemy.org/docs/core/metadata.html#sqlalchemy.schema.Table" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">Table</span></code></a> object is now returned when the <a class="reference internal" href="ops.html#alembic.operations.Operations.create_table" title="alembic.operations.Operations.create_table"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_table()</span></code></a> method is used. This <code class="docutils literal"><span class="pre">Table</span></code> is suitable for use in subsequent SQL operations, in particular the <a class="reference internal" href="ops.html#alembic.operations.Operations.bulk_insert" title="alembic.operations.Operations.bulk_insert"><code class="xref py py-meth docutils literal"><span class="pre">Operations.bulk_insert()</span></code></a> operation.<a class="changeset-link headerlink reference internal" href="#change-1ab0d6e9d0e6ec90e38ef38bb47269b4">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/205/">#205</a></p> </p> </li> <li><p id="change-0.7.0-10"><span class="target" id="change-f82542103269627ada2c618df1ed5c87"><strong>[feature] [autogenerate] </strong></span>Indexes and unique constraints are now included in the <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.include_object" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.include_object</span></code></a> hook. Indexes are sent with type <code class="docutils literal"><span class="pre">"index"</span></code> and unique constraints with type <code class="docutils literal"><span class="pre">"unique_constraint"</span></code>.<a class="changeset-link headerlink reference internal" href="#change-f82542103269627ada2c618df1ed5c87">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/203/">#203</a></p> </p> </li> <li><p id="change-0.7.0-11"><span class="target" id="change-7ac4c12c9bf52594da3181db6595ac79"><strong>[feature] </strong></span>SQLAlchemy’s testing infrastructure is now used to run tests. This system supports both nose and pytest and opens the way for Alembic testing to support any number of backends, parallel testing, and 3rd party dialect testing.<a class="changeset-link headerlink reference internal" href="#change-7ac4c12c9bf52594da3181db6595ac79">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.7.0-bug"> <h3>bug<a class="headerlink" href="#change-0.7.0-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.7.0-12"><span class="target" id="change-f15e1e4ee535baa37b7322f3a29eec25"><strong>[bug] [commands] </strong></span>The <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">revision</span></code> command accepts the <code class="docutils literal"><span class="pre">--sql</span></code> option to suit some very obscure use case where the <code class="docutils literal"><span class="pre">revision_environment</span></code> flag is set up, so that <code class="docutils literal"><span class="pre">env.py</span></code> is run when <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">revision</span></code> is run even though autogenerate isn’t specified. As this flag is otherwise confusing, error messages are now raised if <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">revision</span></code> is invoked with both <code class="docutils literal"><span class="pre">--sql</span></code> and <code class="docutils literal"><span class="pre">--autogenerate</span></code> or with <code class="docutils literal"><span class="pre">--sql</span></code> without <code class="docutils literal"><span class="pre">revision_environment</span></code> being set.<a class="changeset-link headerlink reference internal" href="#change-f15e1e4ee535baa37b7322f3a29eec25">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/248/">#248</a></p> </p> </li> <li><p id="change-0.7.0-13"><span class="target" id="change-b6ed2c44086e4d8c38da44bababd660e"><strong>[bug] [postgresql] [autogenerate] </strong></span>Added a rule for Postgresql to not render a “drop unique” and “drop index” given the same name; for now it is assumed that the “index” is the implicit one Postgreql generates. Future integration with new SQLAlchemy 1.0 features will improve this to be more resilient.<a class="changeset-link headerlink reference internal" href="#change-b6ed2c44086e4d8c38da44bababd660e">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/247/">#247</a></p> </p> </li> <li><p id="change-0.7.0-14"><span class="target" id="change-4ae0ee2ba481ff390459892a4a37c0f3"><strong>[bug] [autogenerate] </strong></span>A change in the ordering when columns and constraints are dropped; autogenerate will now place the “drop constraint” calls <em>before</em> the “drop column” calls, so that columns involved in those constraints still exist when the constraint is dropped.<a class="changeset-link headerlink reference internal" href="#change-4ae0ee2ba481ff390459892a4a37c0f3">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/247/">#247</a></p> </p> </li> <li><p id="change-0.7.0-15"><span class="target" id="change-2805c3d5a2d66fe24e3d6edb285dec92"><strong>[bug] [oracle] </strong></span>The Oracle dialect sets “transactional DDL” to False by default, as Oracle does not support transactional DDL.<a class="changeset-link headerlink reference internal" href="#change-2805c3d5a2d66fe24e3d6edb285dec92">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/245/">#245</a></p> </p> </li> <li><p id="change-0.7.0-16"><span class="target" id="change-c5bf69f3054ddcff091d729dcba2ba0b"><strong>[bug] [autogenerate] </strong></span>Fixed a variety of issues surrounding rendering of Python code that contains unicode literals. The first is that the “quoted_name” construct that SQLAlchemy uses to represent table and column names as well as schema names does not <code class="docutils literal"><span class="pre">repr()</span></code> correctly on Py2K when the value contains unicode characters; therefore an explicit stringification is added to these. Additionally, SQL expressions such as server defaults were not being generated in a unicode-safe fashion leading to decode errors if server defaults contained non-ascii characters.<a class="changeset-link headerlink reference internal" href="#change-c5bf69f3054ddcff091d729dcba2ba0b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/243/">#243</a></p> </p> </li> <li><p id="change-0.7.0-17"><span class="target" id="change-263802e51f07a564f2e80228ee50efa8"><strong>[bug] [operations] </strong></span>The <a class="reference internal" href="ops.html#alembic.operations.Operations.add_column" title="alembic.operations.Operations.add_column"><code class="xref py py-meth docutils literal"><span class="pre">Operations.add_column()</span></code></a> directive will now additionally emit the appropriate <code class="docutils literal"><span class="pre">CREATE</span> <span class="pre">INDEX</span></code> statement if the <a class="reference external" href="http://www.sqlalchemy.org/docs/core/metadata.html#sqlalchemy.schema.Column" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">Column</span></code></a> object specifies <code class="docutils literal"><span class="pre">index=True</span></code>. Pull request courtesy David Szotten.<a class="changeset-link headerlink reference internal" href="#change-263802e51f07a564f2e80228ee50efa8">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/174/">#174</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/29">pull request bitbucket:29</a></p> </p> </li> <li><p id="change-0.7.0-18"><span class="target" id="change-438ea1be5699b9226b5ef0e1c298a0c0"><strong>[bug] [autogenerate] </strong></span>Bound parameters are now resolved as “literal” values within the SQL expression inside of a CheckConstraint(), when rendering the SQL as a text string; supported for SQLAlchemy 0.8.0 and forward.<a class="changeset-link headerlink reference internal" href="#change-438ea1be5699b9226b5ef0e1c298a0c0">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/219/">#219</a></p> </p> </li> <li><p id="change-0.7.0-19"><span class="target" id="change-e6c112ca1d9cdf5b60608d18c4f4b073"><strong>[bug] [autogenerate] </strong></span>Added a workaround for SQLAlchemy issue #3023 (fixed in 0.9.5) where a column that’s part of an explicit PrimaryKeyConstraint would not have its “nullable” flag set to False, thus producing a false autogenerate. Also added a related correction to MySQL which will correct for MySQL’s implicit server default of ‘0’ when a NULL integer column is turned into a primary key column.<a class="changeset-link headerlink reference internal" href="#change-e6c112ca1d9cdf5b60608d18c4f4b073">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/199/">#199</a></p> </p> </li> <li><p id="change-0.7.0-20"><span class="target" id="change-23fb92aa3b8117c9d89ce3c87a45f0fe"><strong>[bug] [autogenerate] [mysql] </strong></span>Repaired issue related to the fix for #208 and others; a composite foreign key reported by MySQL would cause a KeyError as Alembic attempted to remove MySQL’s implicitly generated indexes from the autogenerate list.<a class="changeset-link headerlink reference internal" href="#change-23fb92aa3b8117c9d89ce3c87a45f0fe">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/240/">#240</a></p> </p> </li> <li><p id="change-0.7.0-21"><span class="target" id="change-5ca7ae6aa537988e7d02beda23acae3e"><strong>[bug] [autogenerate] </strong></span>If the “alembic_version” table is present in the target metadata, autogenerate will skip this also. Pull request courtesy Dj Gilcrease.<a class="changeset-link headerlink reference internal" href="#change-5ca7ae6aa537988e7d02beda23acae3e">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/28/">#28</a></p> </p> </li> <li><p id="change-0.7.0-22"><span class="target" id="change-40ae1af5952dbe3b749bac486e208583"><strong>[bug] [autogenerate] </strong></span>The <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.version_table" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.version_table</span></code></a> and <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.version_table_schema" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.version_table_schema</span></code></a> arguments are now honored during the autogenerate process, such that these names will be used as the “skip” names on both the database reflection and target metadata sides.<a class="changeset-link headerlink reference internal" href="#change-40ae1af5952dbe3b749bac486e208583">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/77/">#77</a></p> </p> </li> <li><p id="change-0.7.0-23"><span class="target" id="change-1d63826fda64150da1fe33662c38ca22"><strong>[bug] [templates] </strong></span>Revision files are now written out using the <code class="docutils literal"><span class="pre">'wb'</span></code> modifier to <code class="docutils literal"><span class="pre">open()</span></code>, since Mako reads the templates with <code class="docutils literal"><span class="pre">'rb'</span></code>, thus preventing CRs from being doubled up as has been observed on windows. The encoding of the output now defaults to ‘utf-8’, which can be configured using a newly added config file parameter <code class="docutils literal"><span class="pre">output_encoding</span></code>.<a class="changeset-link headerlink reference internal" href="#change-1d63826fda64150da1fe33662c38ca22">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/234/">#234</a></p> </p> </li> <li><p id="change-0.7.0-24"><span class="target" id="change-5d25e097771fb68b6a7d50b2c3ff3b8e"><strong>[bug] [operations] </strong></span>Added support for use of the <a class="reference external" href="http://www.sqlalchemy.org/docs/core/sqlelement.html#sqlalchemy.sql.elements.quoted_name" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">quoted_name</span></code></a> construct when using the <code class="docutils literal"><span class="pre">schema</span></code> argument within operations. This allows a name containing a dot to be fully quoted, as well as to provide configurable quoting on a per-name basis.<a class="changeset-link headerlink reference internal" href="#change-5d25e097771fb68b6a7d50b2c3ff3b8e">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/230/">#230</a></p> </p> </li> <li><p id="change-0.7.0-25"><span class="target" id="change-bf968f9f5fad2434ed503394651ec076"><strong>[bug] [postgresql] [autogenerate] </strong></span>Added a routine by which the Postgresql Alembic dialect inspects the server default of INTEGER/BIGINT columns as they are reflected during autogenerate for the pattern <code class="docutils literal"><span class="pre">nextval(<name>...)</span></code> containing a potential sequence name, then queries <code class="docutils literal"><span class="pre">pg_catalog</span></code> to see if this sequence is “owned” by the column being reflected; if so, it assumes this is a SERIAL or BIGSERIAL column and the server default is omitted from the column reflection as well as any kind of server_default comparison or rendering, along with an INFO message in the logs indicating this has taken place. This allows SERIAL/BIGSERIAL columns to keep the SEQUENCE from being unnecessarily present within the autogenerate operation.<a class="changeset-link headerlink reference internal" href="#change-bf968f9f5fad2434ed503394651ec076">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/73/">#73</a></p> </p> </li> <li><p id="change-0.7.0-26"><span class="target" id="change-99d69e5327f8dd694fcf6001b77fb267"><strong>[bug] [autogenerate] </strong></span>The system by which autogenerate renders expressions within a <a class="reference external" href="http://www.sqlalchemy.org/docs/core/constraints.html#sqlalchemy.schema.Index" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">Index</span></code></a>, the <code class="docutils literal"><span class="pre">server_default</span></code> of <a class="reference external" href="http://www.sqlalchemy.org/docs/core/metadata.html#sqlalchemy.schema.Column" title="(in SQLAlchemy v1.0)"><code class="xref py py-class docutils literal"><span class="pre">Column</span></code></a>, and the <code class="docutils literal"><span class="pre">existing_server_default</span></code> of <a class="reference internal" href="ops.html#alembic.operations.Operations.alter_column" title="alembic.operations.Operations.alter_column"><code class="xref py py-meth docutils literal"><span class="pre">Operations.alter_column()</span></code></a> has been overhauled to anticipate arbitrary SQLAlchemy SQL constructs, such as <code class="docutils literal"><span class="pre">func.somefunction()</span></code>, <code class="docutils literal"><span class="pre">cast()</span></code>, <code class="docutils literal"><span class="pre">desc()</span></code>, and others. The system does not, as might be preferred, render the full-blown Python expression as originally created within the application’s source code, as this would be exceedingly complex and difficult. Instead, it renders the SQL expression against the target backend that’s subject to the autogenerate, and then renders that SQL inside of a <a class="reference external" href="http://www.sqlalchemy.org/docs/core/sqlelement.html#sqlalchemy.sql.expression.text" title="(in SQLAlchemy v1.0)"><code class="xref py py-func docutils literal"><span class="pre">text()</span></code></a> construct as a literal SQL string. This approach still has the downside that the rendered SQL construct may not be backend-agnostic in all cases, so there is still a need for manual intervention in that small number of cases, but overall the majority of cases should work correctly now. Big thanks to Carlos Rivera for pull requests and support on this.<a class="changeset-link headerlink reference internal" href="#change-99d69e5327f8dd694fcf6001b77fb267">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/197/">#197</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/196/">#196</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/64/">#64</a></p> </p> </li> <li><p id="change-0.7.0-27"><span class="target" id="change-35b9e45fd447fb83eba6120dab13bfbb"><strong>[bug] [operations] </strong></span>The “match” keyword is not sent to <code class="xref py py-class docutils literal"><span class="pre">ForeignKeyConstraint</span></code> by <a class="reference internal" href="ops.html#alembic.operations.Operations.create_foreign_key" title="alembic.operations.Operations.create_foreign_key"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_foreign_key()</span></code></a> when SQLAlchemy 0.7 is in use; this keyword was added to SQLAlchemy as of 0.8.0.<a class="changeset-link headerlink reference internal" href="#change-35b9e45fd447fb83eba6120dab13bfbb">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.7"> <h2>0.6.7<a class="headerlink" href="#change-0.6.7" title="Permalink to this headline">ΒΆ</a></h2> Released: September 9, 2014<div class="section" id="change-0.6.7-feature"> <h3>feature<a class="headerlink" href="#change-0.6.7-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.7-0"><span class="target" id="change-367fd1b9fe1fe5d7c56408fa73ab418c"><strong>[feature] </strong></span>Added support for functional indexes when using the <a class="reference internal" href="ops.html#alembic.operations.Operations.create_index" title="alembic.operations.Operations.create_index"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_index()</span></code></a> directive. Within the list of columns, the SQLAlchemy <code class="docutils literal"><span class="pre">text()</span></code> construct can be sent, embedding a literal SQL expression; the <a class="reference internal" href="ops.html#alembic.operations.Operations.create_index" title="alembic.operations.Operations.create_index"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_index()</span></code></a> will perform some hackery behind the scenes to get the <code class="xref py py-class docutils literal"><span class="pre">Index</span></code> construct to cooperate. This works around some current limitations in <code class="xref py py-class docutils literal"><span class="pre">Index</span></code> which should be resolved on the SQLAlchemy side at some point.<a class="changeset-link headerlink reference internal" href="#change-367fd1b9fe1fe5d7c56408fa73ab418c">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/222/">#222</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.7-bug"> <h3>bug<a class="headerlink" href="#change-0.6.7-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.7-1"><span class="target" id="change-be1e47b17da492587438fb8424adb7a1"><strong>[bug] [mssql] </strong></span>Fixed bug in MSSQL dialect where “rename table” wasn’t using <code class="docutils literal"><span class="pre">sp_rename()</span></code> as is required on SQL Server. Pull request courtesy Εukasz BoΕdys.<a class="changeset-link headerlink reference internal" href="#change-be1e47b17da492587438fb8424adb7a1">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/26">pull request bitbucket:26</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.6"> <h2>0.6.6<a class="headerlink" href="#change-0.6.6" title="Permalink to this headline">ΒΆ</a></h2> Released: August 7, 2014<div class="section" id="change-0.6.6-feature"> <h3>feature<a class="headerlink" href="#change-0.6.6-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.6-0"><span class="target" id="change-d057961ce5b3254ebbbc9fcf8e533680"><strong>[feature] </strong></span>Added a new accessor <a class="reference internal" href="api/runtime.html#alembic.runtime.migration.MigrationContext.config" title="alembic.runtime.migration.MigrationContext.config"><code class="xref py py-attr docutils literal"><span class="pre">MigrationContext.config</span></code></a>, when used in conjunction with a <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext" title="alembic.runtime.environment.EnvironmentContext"><code class="xref py py-class docutils literal"><span class="pre">EnvironmentContext</span></code></a> and <a class="reference internal" href="api/config.html#alembic.config.Config" title="alembic.config.Config"><code class="xref py py-class docutils literal"><span class="pre">Config</span></code></a>, this config will be returned. Patch courtesy Marc Abramowitz.<a class="changeset-link headerlink reference internal" href="#change-d057961ce5b3254ebbbc9fcf8e533680">ΒΆ</a><p>References: <a class="reference external" href="https://github.com/zzzeek/alembic/pull/10">pull request github:10</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.6-bug"> <h3>bug<a class="headerlink" href="#change-0.6.6-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.6-1"><span class="target" id="change-fb1cdc0b0595b08864e2ebd72f685282"><strong>[bug] </strong></span>A file named <code class="docutils literal"><span class="pre">__init__.py</span></code> in the <code class="docutils literal"><span class="pre">versions/</span></code> directory is now ignored by Alembic when the collection of version files is retrieved. Pull request courtesy Michael Floering.<a class="changeset-link headerlink reference internal" href="#change-fb1cdc0b0595b08864e2ebd72f685282">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/95/">#95</a>, <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/24">pull request bitbucket:24</a></p> </p> </li> <li><p id="change-0.6.6-2"><span class="target" id="change-36ad882cb5e3ba518e933bec9ad8097f"><strong>[bug] </strong></span>Fixed Py3K bug where an attempt would be made to sort None against string values when autogenerate would detect tables across multiple schemas, including the default schema. Pull request courtesy paradoxxxzero.<a class="changeset-link headerlink reference internal" href="#change-36ad882cb5e3ba518e933bec9ad8097f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/23">pull request bitbucket:23</a></p> </p> </li> <li><p id="change-0.6.6-3"><span class="target" id="change-aebc3eaf30968bbd26c53659377d8aa4"><strong>[bug] </strong></span>Autogenerate render will render the arguments within a Table construct using <code class="docutils literal"><span class="pre">*[...]</span></code> when the number of columns/elements is greater than 255. Pull request courtesy Ryan P. Kelly.<a class="changeset-link headerlink reference internal" href="#change-aebc3eaf30968bbd26c53659377d8aa4">ΒΆ</a><p>References: <a class="reference external" href="https://github.com/zzzeek/alembic/pull/15">pull request github:15</a></p> </p> </li> <li><p id="change-0.6.6-4"><span class="target" id="change-13e6dabbe64ea41e59509b94b0ca1e32"><strong>[bug] </strong></span>Fixed bug where foreign key constraints would fail to render in autogenerate when a schema name was present. Pull request courtesy Andreas Zeidler.<a class="changeset-link headerlink reference internal" href="#change-13e6dabbe64ea41e59509b94b0ca1e32">ΒΆ</a><p>References: <a class="reference external" href="https://github.com/zzzeek/alembic/pull/14">pull request github:14</a></p> </p> </li> <li><p id="change-0.6.6-5"><span class="target" id="change-5d9e3cf552242293705305168a87aa4b"><strong>[bug] </strong></span>Some deep-in-the-weeds fixes to try to get “server default” comparison working better across platforms and expressions, in particular on the Postgresql backend, mostly dealing with quoting/not quoting of various expressions at the appropriate time and on a per-backend basis. Repaired and tested support for such defaults as Postgresql interval and array defaults.<a class="changeset-link headerlink reference internal" href="#change-5d9e3cf552242293705305168a87aa4b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/212/">#212</a></p> </p> </li> <li><p id="change-0.6.6-6"><span class="target" id="change-afcf3a95ca0bfe87c9371ba9bef1d750"><strong>[bug] </strong></span>Liberalized even more the check for MySQL indexes that shouldn’t be counted in autogenerate as “drops”; this time it’s been reported that an implicitly created index might be named the same as a composite foreign key constraint, and not the actual columns, so we now skip those when detected as well.<a class="changeset-link headerlink reference internal" href="#change-afcf3a95ca0bfe87c9371ba9bef1d750">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/208/">#208</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.6-misc"> <h3>misc<a class="headerlink" href="#change-0.6.6-misc" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.6-7"><span class="target" id="change-777474403d509be94efdd14f3262e410"><strong>[enhancement] </strong></span>When a run of Alembic command line fails due to <code class="docutils literal"><span class="pre">CommandError</span></code>, the output now prefixes the string with <code class="docutils literal"><span class="pre">"FAILED:"</span></code>, and the error is also written to the log output using <code class="docutils literal"><span class="pre">log.error()</span></code>.<a class="changeset-link headerlink reference internal" href="#change-777474403d509be94efdd14f3262e410">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/209/">#209</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.5"> <h2>0.6.5<a class="headerlink" href="#change-0.6.5" title="Permalink to this headline">ΒΆ</a></h2> Released: May 3, 2014<div class="section" id="change-0.6.5-feature"> <h3>feature<a class="headerlink" href="#change-0.6.5-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.5-0"><span class="target" id="change-82b2f1589317c30a3bf32cbf7b4e089c"><strong>[feature] [environment] </strong></span>Added new feature <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.transaction_per_migration" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.transaction_per_migration</span></code></a>, which when True causes the BEGIN/COMMIT pair to incur for each migration individually, rather than for the whole series of migrations. This is to assist with some database directives that need to be within individual transactions, without the need to disable transactional DDL entirely.<a class="changeset-link headerlink reference internal" href="#change-82b2f1589317c30a3bf32cbf7b4e089c">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/201/">#201</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.5-bug"> <h3>bug<a class="headerlink" href="#change-0.6.5-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.5-1"><span class="target" id="change-08832fb2cc714d02fe5132ef43a318f5"><strong>[bug] [autogenerate] [mysql] </strong></span>This releases’ “autogenerate index detection” bug, when a MySQL table includes an Index with the same name as a column, autogenerate reported it as an “add” even though its not; this is because we ignore reflected indexes of this nature due to MySQL creating them implicitly. Indexes that are named the same as a column are now ignored on MySQL if we see that the backend is reporting that it already exists; this indicates that we can still detect additions of these indexes but not drops, as we cannot distinguish a backend index same-named as the column as one that is user generated or mysql-generated.<a class="changeset-link headerlink reference internal" href="#change-08832fb2cc714d02fe5132ef43a318f5">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/202/">#202</a></p> </p> </li> <li><p id="change-0.6.5-2"><span class="target" id="change-dbb0806fb97da35ffe87ba5acf3651d4"><strong>[bug] [autogenerate] </strong></span>Fixed bug where the <code class="docutils literal"><span class="pre">include_object()</span></code> filter would not receive the original <code class="xref py py-class docutils literal"><span class="pre">Column</span></code> object when evaluating a database-only column to be dropped; the object would not include the parent <code class="xref py py-class docutils literal"><span class="pre">Table</span></code> nor other aspects of the column that are important for generating the “downgrade” case where the column is recreated.<a class="changeset-link headerlink reference internal" href="#change-dbb0806fb97da35ffe87ba5acf3651d4">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/200/">#200</a></p> </p> </li> <li><p id="change-0.6.5-3"><span class="target" id="change-24610c8aede24d249a1afcab632ffdef"><strong>[bug] [environment] </strong></span>Fixed bug where <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.get_x_argument" title="alembic.runtime.environment.EnvironmentContext.get_x_argument"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.get_x_argument()</span></code></a> would fail if the <a class="reference internal" href="api/config.html#alembic.config.Config" title="alembic.config.Config"><code class="xref py py-class docutils literal"><span class="pre">Config</span></code></a> in use didn’t actually originate from a command line call.<a class="changeset-link headerlink reference internal" href="#change-24610c8aede24d249a1afcab632ffdef">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/195/">#195</a></p> </p> </li> <li><p id="change-0.6.5-4"><span class="target" id="change-66c78964c43f4efabe562c923a416922"><strong>[bug] [autogenerate] </strong></span>Fixed another bug regarding naming conventions, continuing from <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/183/">#183</a>, where add_index() drop_index() directives would not correctly render the <code class="docutils literal"><span class="pre">f()</span></code> construct when the index contained a convention-driven name.<a class="changeset-link headerlink reference internal" href="#change-66c78964c43f4efabe562c923a416922">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/194/">#194</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.4"> <h2>0.6.4<a class="headerlink" href="#change-0.6.4" title="Permalink to this headline">ΒΆ</a></h2> Released: March 28, 2014<div class="section" id="change-0.6.4-feature"> <h3>feature<a class="headerlink" href="#change-0.6.4-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.4-0"><span class="target" id="change-1cec795b398f1046836fd19744767935"><strong>[feature] </strong></span>The <a class="reference internal" href="api/commands.html#alembic.command.revision" title="alembic.command.revision"><code class="xref py py-func docutils literal"><span class="pre">command.revision()</span></code></a> command now returns the <a class="reference internal" href="api/script.html#alembic.script.Script" title="alembic.script.Script"><code class="xref py py-class docutils literal"><span class="pre">Script</span></code></a> object corresponding to the newly generated revision. From this structure, one can get the revision id, the module documentation, and everything else, for use in scripts that call upon this command. Pull request courtesy Robbie Coomber.<a class="changeset-link headerlink reference internal" href="#change-1cec795b398f1046836fd19744767935">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/20">pull request bitbucket:20</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.4-bug"> <h3>bug<a class="headerlink" href="#change-0.6.4-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.4-1"><span class="target" id="change-8d72b390933c9eeed92ce824dfea07ab"><strong>[bug] [mssql] </strong></span>Added quoting to the table name when the special EXEC is run to drop any existing server defaults or constraints when the <a class="reference internal" href="ops.html#alembic.operations.Operations.drop_column.params.mssql_drop_check" title="alembic.operations.Operations.drop_column"><code class="xref py py-paramref docutils literal"><span class="pre">drop_column.mssql_drop_check</span></code></a> or <a class="reference internal" href="ops.html#alembic.operations.Operations.drop_column.params.mssql_drop_default" title="alembic.operations.Operations.drop_column"><code class="xref py py-paramref docutils literal"><span class="pre">drop_column.mssql_drop_default</span></code></a> arguments are used.<a class="changeset-link headerlink reference internal" href="#change-8d72b390933c9eeed92ce824dfea07ab">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/186/">#186</a></p> </p> </li> <li><p id="change-0.6.4-2"><span class="target" id="change-37a0a4b5af840eefcf7d0f2e1fff22f6"><strong>[bug] [mysql] </strong></span>Added/fixed support for MySQL “SET DEFAULT” / “DROP DEFAULT” phrases, which will now be rendered if only the server default is changing or being dropped (e.g. specify None to alter_column() to indicate “DROP DEFAULT”). Also added support for rendering MODIFY rather than CHANGE when the column name isn’t changing.<a class="changeset-link headerlink reference internal" href="#change-37a0a4b5af840eefcf7d0f2e1fff22f6">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/103/">#103</a></p> </p> </li> <li><p id="change-0.6.4-3"><span class="target" id="change-02a2337216c3734fc205d6b50783e08e"><strong>[bug] </strong></span>Added support for the <code class="docutils literal"><span class="pre">initially</span></code>, <code class="docutils literal"><span class="pre">match</span></code> keyword arguments as well as dialect-specific keyword arguments to <a class="reference internal" href="ops.html#alembic.operations.Operations.create_foreign_key" title="alembic.operations.Operations.create_foreign_key"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_foreign_key()</span></code></a>.<table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field-odd field"><th class="field-name">tags:</th><td class="field-body">feature</td> </tr> <tr class="field-even field"><th class="field-name">tickets:</th><td class="field-body">163</td> </tr> </tbody> </table> <p>Altered the support for “sourceless” migration files (e.g. only .pyc or .pyo present) so that the flag “sourceless=true” needs to be in alembic.ini for this behavior to take effect.</p> <a class="changeset-link headerlink reference internal" href="#change-02a2337216c3734fc205d6b50783e08e">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/190/">#190</a></p> </p> </li> <li><p id="change-0.6.4-4"><span class="target" id="change-ae1e7d2785afd70303343b0a6f876572"><strong>[bug] [mssql] </strong></span>The feature that keeps on giving, index/unique constraint autogenerate detection, has even more fixes, this time to accommodate database dialects that both don’t yet report on unique constraints, but the backend does report unique constraints as indexes. The logic Alembic uses to distinguish between “this is an index!” vs. “this is a unique constraint that is also reported as an index!” has now been further enhanced to not produce unwanted migrations when the dialect is observed to not yet implement get_unique_constraints() (e.g. mssql). Note that such a backend will no longer report index drops for unique indexes, as these cannot be distinguished from an unreported unique index.<a class="changeset-link headerlink reference internal" href="#change-ae1e7d2785afd70303343b0a6f876572">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/185/">#185</a></p> </p> </li> <li><p id="change-0.6.4-5"><span class="target" id="change-8b2e57ac61a4493d86940abbc8167df2"><strong>[bug] </strong></span>Extensive changes have been made to more fully support SQLAlchemy’s new naming conventions feature. Note that while SQLAlchemy has added this feature as of 0.9.2, some additional fixes in 0.9.4 are needed to resolve some of the issues:<ol class="arabic"> <li>The <a class="reference internal" href="ops.html#alembic.operations.Operations" title="alembic.operations.Operations"><code class="xref py py-class docutils literal"><span class="pre">Operations</span></code></a> object now takes into account the naming conventions that are present on the <code class="xref py py-class docutils literal"><span class="pre">MetaData</span></code> object that’s associated using <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.target_metadata" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">target_metadata</span></code></a>. When <a class="reference internal" href="ops.html#alembic.operations.Operations" title="alembic.operations.Operations"><code class="xref py py-class docutils literal"><span class="pre">Operations</span></code></a> renders a constraint directive like <code class="docutils literal"><span class="pre">ADD</span> <span class="pre">CONSTRAINT</span></code>, it now will make use of this naming convention when it produces its own temporary <code class="xref py py-class docutils literal"><span class="pre">MetaData</span></code> object.</li> <li>Note however that the autogenerate feature in most cases generates constraints like foreign keys and unique constraints with the final names intact; the only exception are the constraints implicit with a schema-type like Boolean or Enum. In most of these cases, the naming convention feature will not take effect for these constraints and will instead use the given name as is, with one exception....</li> <li>Naming conventions which use the <code class="docutils literal"><span class="pre">"%(constraint_name)s"</span></code> token, that is, produce a new name that uses the original name as a component, will still be pulled into the naming convention converter and be converted. The problem arises when autogenerate renders a constraint with it’s already-generated name present in the migration file’s source code, the name will be doubled up at render time due to the combination of #1 and #2. So to work around this, autogenerate now renders these already-tokenized names using the new <a class="reference internal" href="ops.html#alembic.operations.Operations.f" title="alembic.operations.Operations.f"><code class="xref py py-meth docutils literal"><span class="pre">Operations.f()</span></code></a> component. This component is only generated if <strong>SQLAlchemy 0.9.4</strong> or greater is in use.</li> </ol> <p>Therefore it is highly recommended that an upgrade to Alembic 0.6.4 be accompanied by an upgrade of SQLAlchemy 0.9.4, if the new naming conventions feature is used.</p> <div class="admonition seealso"> <p class="first admonition-title">See also</p> <p class="last"><a class="reference internal" href="naming.html#autogen-naming-conventions"><span>Integration of Naming Conventions into Operations, Autogenerate</span></a></p> </div> <a class="changeset-link headerlink reference internal" href="#change-8b2e57ac61a4493d86940abbc8167df2">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/183/">#183</a></p> </p> </li> <li><p id="change-0.6.4-6"><span class="target" id="change-3ed8c566a5744760031ab16b1223933f"><strong>[bug] </strong></span>Suppressed IOErrors which can raise when program output pipe is closed under a program like <code class="docutils literal"><span class="pre">head</span></code>; however this only works on Python 2. On Python 3, there is not yet a known way to suppress the BrokenPipeError warnings without prematurely terminating the program via signals.<a class="changeset-link headerlink reference internal" href="#change-3ed8c566a5744760031ab16b1223933f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/160/">#160</a></p> </p> </li> <li><p id="change-0.6.4-7"><span class="target" id="change-d8ad925bf390337cbb38b6fbefb8f545"><strong>[bug] </strong></span>Fixed bug where <a class="reference internal" href="ops.html#alembic.operations.Operations.bulk_insert" title="alembic.operations.Operations.bulk_insert"><code class="xref py py-meth docutils literal"><span class="pre">Operations.bulk_insert()</span></code></a> would not function properly when <a class="reference internal" href="ops.html#alembic.operations.Operations.inline_literal" title="alembic.operations.Operations.inline_literal"><code class="xref py py-meth docutils literal"><span class="pre">Operations.inline_literal()</span></code></a> values were used, either in –sql or non-sql mode. The values will now render directly in –sql mode. For compatibility with “online” mode, a new flag <a class="reference internal" href="ops.html#alembic.operations.Operations.bulk_insert.params.multiinsert" title="alembic.operations.Operations.bulk_insert"><code class="xref py py-paramref docutils literal"><span class="pre">multiinsert</span></code></a> can be set to False which will cause each parameter set to be compiled and executed with individual INSERT statements.<a class="changeset-link headerlink reference internal" href="#change-d8ad925bf390337cbb38b6fbefb8f545">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/179/">#179</a></p> </p> </li> <li><p id="change-0.6.4-8"><span class="target" id="change-d94fdbccfa3c17c2917e19c4f23f8b32"><strong>[bug] [py3k] </strong></span>Fixed a failure of the system that allows “legacy keyword arguments” to be understood, which arose as of a change in Python 3.4 regarding decorators. A workaround is applied that allows the code to work across Python 3 versions.<a class="changeset-link headerlink reference internal" href="#change-d94fdbccfa3c17c2917e19c4f23f8b32">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/175/">#175</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.3"> <h2>0.6.3<a class="headerlink" href="#change-0.6.3" title="Permalink to this headline">ΒΆ</a></h2> Released: February 2, 2014<div class="section" id="change-0.6.3-feature"> <h3>feature<a class="headerlink" href="#change-0.6.3-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.3-0"><span class="target" id="change-551755ae8a5aa7d31976678bf04faf16"><strong>[feature] </strong></span>Added new argument <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.user_module_prefix" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.user_module_prefix</span></code></a>. This prefix is applied when autogenerate renders a user-defined type, which here is defined as any type that is from a module outside of the <code class="docutils literal"><span class="pre">sqlalchemy.</span></code> hierarchy. This prefix defaults to <code class="docutils literal"><span class="pre">None</span></code>, in which case the <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.sqlalchemy_module_prefix" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.sqlalchemy_module_prefix</span></code></a> is used, thus preserving the current behavior.<a class="changeset-link headerlink reference internal" href="#change-551755ae8a5aa7d31976678bf04faf16">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/171/">#171</a></p> </p> </li> <li><p id="change-0.6.3-1"><span class="target" id="change-f4b9dab7aa1559258ccce0c07b670731"><strong>[feature] </strong></span>The <a class="reference internal" href="api/script.html#alembic.script.ScriptDirectory" title="alembic.script.ScriptDirectory"><code class="xref py py-class docutils literal"><span class="pre">ScriptDirectory</span></code></a> system that loads migration files from a <code class="docutils literal"><span class="pre">versions/</span></code> directory now supports so-called “sourceless” operation, where the <code class="docutils literal"><span class="pre">.py</span></code> files are not present and instead <code class="docutils literal"><span class="pre">.pyc</span></code> or <code class="docutils literal"><span class="pre">.pyo</span></code> files are directly present where the <code class="docutils literal"><span class="pre">.py</span></code> files should be. Note that while Python 3.3 has a new system of locating <code class="docutils literal"><span class="pre">.pyc</span></code>/<code class="docutils literal"><span class="pre">.pyo</span></code> files within a directory called <code class="docutils literal"><span class="pre">__pycache__</span></code> (e.g. PEP-3147), PEP-3147 maintains support for the “source-less imports” use case, where the <code class="docutils literal"><span class="pre">.pyc</span></code>/<code class="docutils literal"><span class="pre">.pyo</span></code> are in present in the “old” location, e.g. next to the <code class="docutils literal"><span class="pre">.py</span></code> file; this is the usage that’s supported even when running Python3.3.<a class="changeset-link headerlink reference internal" href="#change-f4b9dab7aa1559258ccce0c07b670731">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/163/">#163</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.3-bug"> <h3>bug<a class="headerlink" href="#change-0.6.3-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.3-2"><span class="target" id="change-8f1d37b9f0a00cf5988d065471a33ef4"><strong>[bug] </strong></span>Added a workaround for when we call <code class="docutils literal"><span class="pre">fcntl.ioctl()</span></code> to get at <code class="docutils literal"><span class="pre">TERMWIDTH</span></code>; if the function returns zero, as is reported to occur in some pseudo-ttys, the message wrapping system is disabled in the same way as if <code class="docutils literal"><span class="pre">ioctl()</span></code> failed.<a class="changeset-link headerlink reference internal" href="#change-8f1d37b9f0a00cf5988d065471a33ef4">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/172/">#172</a></p> </p> </li> <li><p id="change-0.6.3-3"><span class="target" id="change-a4a58822612e56e3bd38e3bbc6ef443f"><strong>[bug] </strong></span>Added support for autogenerate covering the use case where <code class="xref py py-class docutils literal"><span class="pre">Table</span></code> objects specified in the metadata have an explicit <code class="docutils literal"><span class="pre">schema</span></code> attribute whose name matches that of the connection’s default schema (e.g. “public” for Postgresql). Previously, it was assumed that “schema” was <code class="docutils literal"><span class="pre">None</span></code> when it matched the “default” schema, now the comparison adjusts for this.<a class="changeset-link headerlink reference internal" href="#change-a4a58822612e56e3bd38e3bbc6ef443f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/170/">#170</a></p> </p> </li> <li><p id="change-0.6.3-4"><span class="target" id="change-5a17153f8a32571400b59ac4b3f62126"><strong>[bug] </strong></span>The <a class="reference internal" href="api/autogenerate.html#alembic.autogenerate.compare_metadata" title="alembic.autogenerate.compare_metadata"><code class="xref py py-func docutils literal"><span class="pre">compare_metadata()</span></code></a> public API function now takes into account the settings for <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.include_object" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.include_object</span></code></a>, <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.include_symbol" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.include_symbol</span></code></a>, and <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure.params.include_schemas" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-paramref docutils literal"><span class="pre">EnvironmentContext.configure.include_schemas</span></code></a>, in the same way that the <code class="docutils literal"><span class="pre">--autogenerate</span></code> command does. Pull request courtesy Roman Podoliaka.<a class="changeset-link headerlink reference internal" href="#change-5a17153f8a32571400b59ac4b3f62126">ΒΆ</a><p>References: <a class="reference external" href="https://github.com/zzzeek/alembic/pull/9">pull request github:9</a></p> </p> </li> <li><p id="change-0.6.3-5"><span class="target" id="change-a5967b3d1fb33cd181893d83eb3431de"><strong>[bug] </strong></span>Calling <code class="xref py py-func docutils literal"><span class="pre">bulk_insert()</span></code> with an empty list will not emit any commands on the current connection. This was already the case with <code class="docutils literal"><span class="pre">--sql</span></code> mode, so is now the case with “online” mode.<a class="changeset-link headerlink reference internal" href="#change-a5967b3d1fb33cd181893d83eb3431de">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/168/">#168</a></p> </p> </li> <li><p id="change-0.6.3-6"><span class="target" id="change-9c0aaf2dd246f7ce94469201ff20b04e"><strong>[bug] </strong></span>Enabled schema support for index and unique constraint autodetection; previously these were non-functional and could in some cases lead to attribute errors. Pull request courtesy Dimitris Theodorou.<a class="changeset-link headerlink reference internal" href="#change-9c0aaf2dd246f7ce94469201ff20b04e">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/17">pull request bitbucket:17</a></p> </p> </li> <li><p id="change-0.6.3-7"><span class="target" id="change-3753611dc2a39d1c40279d9466542710"><strong>[bug] </strong></span>More fixes to index autodetection; indexes created with expressions like DESC or functional indexes will no longer cause AttributeError exceptions when attempting to compare the columns.<a class="changeset-link headerlink reference internal" href="#change-3753611dc2a39d1c40279d9466542710">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/164/">#164</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.2"> <h2>0.6.2<a class="headerlink" href="#change-0.6.2" title="Permalink to this headline">ΒΆ</a></h2> Released: Fri Dec 27 2013<div class="section" id="change-0.6.2-feature"> <h3>feature<a class="headerlink" href="#change-0.6.2-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.2-0"><span class="target" id="change-230e5662147d698eb044179aedd758a5"><strong>[feature] [mssql] </strong></span>Added new argument <code class="docutils literal"><span class="pre">mssql_drop_foreign_key</span></code> to <a class="reference internal" href="ops.html#alembic.operations.Operations.drop_column" title="alembic.operations.Operations.drop_column"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_column()</span></code></a>. Like <code class="docutils literal"><span class="pre">mssql_drop_default</span></code> and <code class="docutils literal"><span class="pre">mssql_drop_check</span></code>, will do an inline lookup for a single foreign key which applies to this column, and drop it. For a column with more than one FK, you’d still need to explicitly use <a class="reference internal" href="ops.html#alembic.operations.Operations.drop_constraint" title="alembic.operations.Operations.drop_constraint"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_constraint()</span></code></a> given the name, even though only MSSQL has this limitation in the first place.<a class="changeset-link headerlink reference internal" href="#change-230e5662147d698eb044179aedd758a5">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.2-bug"> <h3>bug<a class="headerlink" href="#change-0.6.2-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.2-1"><span class="target" id="change-aee87ad5e26501f6f72178e43c0071f7"><strong>[bug] </strong></span>Autogenerate for <code class="docutils literal"><span class="pre">op.create_table()</span></code> will not include a <code class="docutils literal"><span class="pre">PrimaryKeyConstraint()</span></code> that has no columns.<a class="changeset-link headerlink reference internal" href="#change-aee87ad5e26501f6f72178e43c0071f7">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.6.2-2"><span class="target" id="change-e5e89e6d64436d86221ce330786ec931"><strong>[bug] </strong></span>Fixed bug in the not-internally-used <a class="reference internal" href="api/script.html#alembic.script.ScriptDirectory.get_base" title="alembic.script.ScriptDirectory.get_base"><code class="xref py py-meth docutils literal"><span class="pre">ScriptDirectory.get_base()</span></code></a> method which would fail if called on an empty versions directory.<a class="changeset-link headerlink reference internal" href="#change-e5e89e6d64436d86221ce330786ec931">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.6.2-3"><span class="target" id="change-0e713ff458d492df51483d1b5482cdbe"><strong>[bug] </strong></span>An almost-rewrite of the new unique constraint/index autogenerate detection, to accommodate a variety of issues. The emphasis is on not generating false positives for those cases where no net change is present, as these errors are the ones that impact all autogenerate runs:<blockquote> <div><ul> <li>Fixed an issue with unique constraint autogenerate detection where a named <code class="docutils literal"><span class="pre">UniqueConstraint</span></code> on both sides with column changes would render with the “add” operation before the “drop”, requiring the user to reverse the order manually.</li> <li>Corrected for MySQL’s apparent addition of an implicit index for a foreign key column, so that it doesn’t show up as “removed”. This required that the index/constraint autogen system query the dialect-specific implementation for special exceptions.</li> <li>reworked the “dedupe” logic to accommodate MySQL’s bi-directional duplication of unique indexes as unique constraints, and unique constraints as unique indexes. Postgresql’s slightly different logic of duplicating unique constraints into unique indexes continues to be accommodated as well. Note that a unique index or unique constraint removal on a backend that duplicates these may show up as a distinct “remove_constraint()” / “remove_index()” pair, which may need to be corrected in the post-autogenerate if multiple backends are being supported.</li> <li>added another dialect-specific exception to the SQLite backend when dealing with unnamed unique constraints, as the backend can’t currently report on constraints that were made with this technique, hence they’d come out as “added” on every run.</li> <li>the <code class="docutils literal"><span class="pre">op.create_table()</span></code> directive will be auto-generated with the <code class="docutils literal"><span class="pre">UniqueConstraint</span></code> objects inline, but will not double them up with a separate <code class="docutils literal"><span class="pre">create_unique_constraint()</span></code> call, which may have been occurring. Indexes still get rendered as distinct <code class="docutils literal"><span class="pre">op.create_index()</span></code> calls even when the corresponding table was created in the same script.</li> <li>the inline <code class="docutils literal"><span class="pre">UniqueConstraint</span></code> within <code class="docutils literal"><span class="pre">op.create_table()</span></code> includes all the options like <code class="docutils literal"><span class="pre">deferrable</span></code>, <code class="docutils literal"><span class="pre">initially</span></code>, etc. Previously these weren’t rendering.</li> </ul> </div></blockquote> <a class="changeset-link headerlink reference internal" href="#change-0e713ff458d492df51483d1b5482cdbe">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/157/">#157</a></p> </p> </li> <li><p id="change-0.6.2-4"><span class="target" id="change-a5728333532adfd1bc5d62b39798ce5c"><strong>[bug] [mssql] </strong></span>The MSSQL backend will add the batch separator (e.g. <code class="docutils literal"><span class="pre">"GO"</span></code>) in <code class="docutils literal"><span class="pre">--sql</span></code> mode after the final <code class="docutils literal"><span class="pre">COMMIT</span></code> statement, to ensure that statement is also processed in batch mode. Courtesy Derek Harland.<a class="changeset-link headerlink reference internal" href="#change-a5728333532adfd1bc5d62b39798ce5c">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/13">pull request bitbucket:13</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.1"> <h2>0.6.1<a class="headerlink" href="#change-0.6.1" title="Permalink to this headline">ΒΆ</a></h2> Released: Wed Nov 27 2013<div class="section" id="change-0.6.1-feature"> <h3>feature<a class="headerlink" href="#change-0.6.1-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.1-0"><span class="target" id="change-73af9c713e70dbedca14caa1898b24bb"><strong>[feature] </strong></span>Expanded the size of the “slug” generated by “revision” to 40 characters, which is also configurable by new field <code class="docutils literal"><span class="pre">truncate_slug_length</span></code>; and also split on the word rather than the character; courtesy Frozenball.<a class="changeset-link headerlink reference internal" href="#change-73af9c713e70dbedca14caa1898b24bb">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/12">pull request bitbucket:12</a></p> </p> </li> <li><p id="change-0.6.1-1"><span class="target" id="change-6013b903919340a579de5096e6623085"><strong>[feature] </strong></span>Support for autogeneration detection and rendering of indexes and unique constraints has been added. The logic goes through some effort in order to differentiate between true unique constraints and unique indexes, where there are some quirks on backends like Postgresql. The effort here in producing the feature and tests is courtesy of IJL.<a class="changeset-link headerlink reference internal" href="#change-6013b903919340a579de5096e6623085">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/107/">#107</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.1-bug"> <h3>bug<a class="headerlink" href="#change-0.6.1-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.1-2"><span class="target" id="change-88dc9ccb41233be8b455a9fb51d5e49b"><strong>[bug] [mysql] </strong></span>Fixed bug where <code class="xref py py-func docutils literal"><span class="pre">op.alter_column()</span></code> in the MySQL dialect would fail to apply quotes to column names that had mixed casing or spaces.<a class="changeset-link headerlink reference internal" href="#change-88dc9ccb41233be8b455a9fb51d5e49b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/152/">#152</a></p> </p> </li> <li><p id="change-0.6.1-3"><span class="target" id="change-c2178a0f5084e8fb15d3ee1cd4a15320"><strong>[bug] </strong></span>Fixed the output wrapping for Alembic message output, so that we either get the terminal width for “pretty printing” with indentation, or if not we just output the text as is; in any case the text won’t be wrapped too short.<a class="changeset-link headerlink reference internal" href="#change-c2178a0f5084e8fb15d3ee1cd4a15320">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/135/">#135</a></p> </p> </li> <li><p id="change-0.6.1-4"><span class="target" id="change-7765250de7b0f2eab8bacc4f6558b4b2"><strong>[bug] </strong></span>Fixes to Py3k in-place compatibity regarding output encoding and related; the use of the new io.* package introduced some incompatibilities on Py2k. These should be resolved, due to the introduction of new adapter types for translating from io.* to Py2k file types, StringIO types. Thanks to Javier Santacruz for help with this.<a class="changeset-link headerlink reference internal" href="#change-7765250de7b0f2eab8bacc4f6558b4b2">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/pull-request/9">pull request bitbucket:9</a></p> </p> </li> <li><p id="change-0.6.1-5"><span class="target" id="change-74efe224d5846b980546895432ed91c0"><strong>[bug] </strong></span>Fixed py3k bug where the wrong form of <code class="docutils literal"><span class="pre">next()</span></code> was being called when using the list_templates command. Courtesy Chris Wilkes.<a class="changeset-link headerlink reference internal" href="#change-74efe224d5846b980546895432ed91c0">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/145/">#145</a></p> </p> </li> <li><p id="change-0.6.1-6"><span class="target" id="change-949fab900590ca5b0ddbfde83a0c4f09"><strong>[bug] </strong></span>Fixed bug introduced by new <code class="docutils literal"><span class="pre">include_object</span></code> argument where the inspected column would be misinterpreted when using a user-defined type comparison function, causing a KeyError or similar expression-related error. Fix courtesy Maarten van Schaik.<a class="changeset-link headerlink reference internal" href="#change-949fab900590ca5b0ddbfde83a0c4f09">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.6.1-7"><span class="target" id="change-6d738971da915e4a33c0e8055c4faa6a"><strong>[bug] </strong></span>Added the “deferrable” keyword argument to <code class="xref py py-func docutils literal"><span class="pre">op.create_foreign_key()</span></code> so that <code class="docutils literal"><span class="pre">DEFERRABLE</span></code> constraint generation is supported; courtesy Pedro Romano.<a class="changeset-link headerlink reference internal" href="#change-6d738971da915e4a33c0e8055c4faa6a">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.6.1-8"><span class="target" id="change-5442bff8942adce65c56459dabc52133"><strong>[bug] </strong></span>Ensured that strings going to stdout go through an encode/decode phase, so that any non-ASCII characters get to the output stream correctly in both Py2k and Py3k. Also added source encoding detection using Mako’s parse_encoding() routine in Py2k so that the __doc__ of a non-ascii revision file can be treated as unicode in Py2k.<a class="changeset-link headerlink reference internal" href="#change-5442bff8942adce65c56459dabc52133">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/137/">#137</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.6.0"> <h2>0.6.0<a class="headerlink" href="#change-0.6.0" title="Permalink to this headline">ΒΆ</a></h2> Released: Fri July 19 2013<div class="section" id="change-0.6.0-feature"> <h3>feature<a class="headerlink" href="#change-0.6.0-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.0-0"><span class="target" id="change-e85aac89057d7ecbc7ff64a4b078459b"><strong>[feature] </strong></span>Added new kw argument to <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.configure()</span></code></a> <code class="docutils literal"><span class="pre">include_object</span></code>. This is a more flexible version of the <code class="docutils literal"><span class="pre">include_symbol</span></code> argument which allows filtering of columns as well as tables from the autogenerate process, and in the future will also work for types, constraints and other constructs. The fully constructed schema object is passed, including its name and type as well as a flag indicating if the object is from the local application metadata or is reflected.<a class="changeset-link headerlink reference internal" href="#change-e85aac89057d7ecbc7ff64a4b078459b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/101/">#101</a></p> </p> </li> <li><p id="change-0.6.0-1"><span class="target" id="change-718040a480981a8de5ed3abaede6b37e"><strong>[feature] </strong></span>The output of the <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">history</span></code> command is now expanded to show information about each change on multiple lines, including the full top message, resembling the formatting of git log.<a class="changeset-link headerlink reference internal" href="#change-718040a480981a8de5ed3abaede6b37e">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.6.0-2"><span class="target" id="change-22eb2ef73a6d1d21241dd76696605f47"><strong>[feature] </strong></span>Added <a class="reference internal" href="api/config.html#alembic.config.Config.cmd_opts" title="alembic.config.Config.cmd_opts"><code class="xref py py-attr docutils literal"><span class="pre">alembic.config.Config.cmd_opts</span></code></a> attribute, allows access to the <code class="docutils literal"><span class="pre">argparse</span></code> options passed to the <code class="docutils literal"><span class="pre">alembic</span></code> runner.<a class="changeset-link headerlink reference internal" href="#change-22eb2ef73a6d1d21241dd76696605f47">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.6.0-3"><span class="target" id="change-354fd496ba36170581ccca493196020a"><strong>[feature] </strong></span>Added new command line argument <code class="docutils literal"><span class="pre">-x</span></code>, allows extra arguments to be appended to the command line which can be consumed within an <code class="docutils literal"><span class="pre">env.py</span></code> script by looking at <code class="docutils literal"><span class="pre">context.config.cmd_opts.x</span></code>, or more simply a new method <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.get_x_argument" title="alembic.runtime.environment.EnvironmentContext.get_x_argument"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.get_x_argument()</span></code></a>.<a class="changeset-link headerlink reference internal" href="#change-354fd496ba36170581ccca493196020a">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/120/">#120</a></p> </p> </li> <li><p id="change-0.6.0-4"><span class="target" id="change-c079c00ed4644a2b1d013c1a56c5758c"><strong>[feature] </strong></span>Added <code class="docutils literal"><span class="pre">-r</span></code> argument to <code class="docutils literal"><span class="pre">alembic</span> <span class="pre">history</span></code> command, allows specification of <code class="docutils literal"><span class="pre">[start]:[end]</span></code> to view a slice of history. Accepts revision numbers, symbols “base”, “head”, a new symbol “current” representing the current migration, as well as relative ranges for one side at a time (i.e. <code class="docutils literal"><span class="pre">-r-5:head</span></code>, <code class="docutils literal"><span class="pre">-rcurrent:+3</span></code>). Courtesy Atsushi Odagiri for this feature.<a class="changeset-link headerlink reference internal" href="#change-c079c00ed4644a2b1d013c1a56c5758c">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.6.0-5"><span class="target" id="change-18f647f894ffa0b6a0932b815d8a3f64"><strong>[feature] </strong></span>Source base is now in-place for Python 2.6 through 3.3, without the need for 2to3. Support for Python 2.5 and below has been dropped. Huge thanks to Hong Minhee for all the effort on this!<a class="changeset-link headerlink reference internal" href="#change-18f647f894ffa0b6a0932b815d8a3f64">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/55/">#55</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.0-bug"> <h3>bug<a class="headerlink" href="#change-0.6.0-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.0-6"><span class="target" id="change-67121f13cd1633d339ca8d3501a64835"><strong>[bug] </strong></span>Added support for options like “name” etc. to be rendered within CHECK constraints in autogenerate. Courtesy Sok Ann Yap.<a class="changeset-link headerlink reference internal" href="#change-67121f13cd1633d339ca8d3501a64835">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/125/">#125</a></p> </p> </li> <li><p id="change-0.6.0-7"><span class="target" id="change-2bd1c9b7a8cd58fda7933b1f8d517924"><strong>[bug] </strong></span>Repaired autogenerate rendering of ForeignKeyConstraint to include use_alter argument, if present.<a class="changeset-link headerlink reference internal" href="#change-2bd1c9b7a8cd58fda7933b1f8d517924">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.6.0-misc"> <h3>misc<a class="headerlink" href="#change-0.6.0-misc" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.6.0-8"><span class="target" id="change-8f52fd722bff10d1e76ed9c1e41951d0"><strong>[misc] </strong></span>Source repository has been moved from Mercurial to Git.<a class="changeset-link headerlink reference internal" href="#change-8f52fd722bff10d1e76ed9c1e41951d0">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.5.0"> <h2>0.5.0<a class="headerlink" href="#change-0.5.0" title="Permalink to this headline">ΒΆ</a></h2> Released: Thu Apr 4 2013<p><div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">Alembic 0.5.0 now requires at least version 0.7.3 of SQLAlchemy to run properly. Support for 0.6 has been dropped.</p> </div> </p> <div class="section" id="change-0.5.0-feature"> <h3>feature<a class="headerlink" href="#change-0.5.0-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.5.0-0"><span class="target" id="change-7bcc8bee5be4b3648ef4267e30e5ab94"><strong>[feature] </strong></span>Added <code class="docutils literal"><span class="pre">version_table_schema</span></code> argument to <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.configure()</span></code></a>, complements the <code class="docutils literal"><span class="pre">version_table</span></code> argument to set an optional remote schema for the version table. Courtesy Christian Blume.<a class="changeset-link headerlink reference internal" href="#change-7bcc8bee5be4b3648ef4267e30e5ab94">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/76/">#76</a></p> </p> </li> <li><p id="change-0.5.0-1"><span class="target" id="change-44c3d7b8009510f527754b06796814ed"><strong>[feature] </strong></span>Added <code class="docutils literal"><span class="pre">output_encoding</span></code> option to <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.configure()</span></code></a>, used with <code class="docutils literal"><span class="pre">--sql</span></code> mode to apply an encoding to the output stream.<a class="changeset-link headerlink reference internal" href="#change-44c3d7b8009510f527754b06796814ed">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/90/">#90</a></p> </p> </li> <li><p id="change-0.5.0-2"><span class="target" id="change-66f93edf3a52f4a0a2d52b972af2c90f"><strong>[feature] </strong></span>Added <a class="reference internal" href="ops.html#alembic.operations.Operations.create_primary_key" title="alembic.operations.Operations.create_primary_key"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_primary_key()</span></code></a> operation, will genenerate an ADD CONSTRAINT for a primary key.<a class="changeset-link headerlink reference internal" href="#change-66f93edf3a52f4a0a2d52b972af2c90f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/93/">#93</a></p> </p> </li> <li><p id="change-0.5.0-3"><span class="target" id="change-06476e4633169136465535ba4cbcdd49"><strong>[feature] </strong></span>upgrade and downgrade commands will list the first line of the docstring out next to the version number. Courtesy Hong Minhee.<a class="changeset-link headerlink reference internal" href="#change-06476e4633169136465535ba4cbcdd49">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/115/">#115</a></p> </p> </li> <li><p id="change-0.5.0-4"><span class="target" id="change-d5785fa5012c5b4b900ce403cf69c2c1"><strong>[feature] </strong></span>Added –head-only option to “alembic current”, will print current version plus the symbol “(head)” if this version is the head or not. Courtesy Charles-Axel Dein.<a class="changeset-link headerlink reference internal" href="#change-d5785fa5012c5b4b900ce403cf69c2c1">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.5.0-5"><span class="target" id="change-94df06496a5f7f0e97278b19de40874f"><strong>[feature] </strong></span>The rendering of any construct during autogenerate can be customized, in particular to allow special rendering for user-defined column, constraint subclasses, using new <code class="docutils literal"><span class="pre">render_item</span></code> argument to <a class="reference internal" href="api/runtime.html#alembic.runtime.environment.EnvironmentContext.configure" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.configure()</span></code></a>.<a class="changeset-link headerlink reference internal" href="#change-94df06496a5f7f0e97278b19de40874f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/108/">#108</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.5.0-bug"> <h3>bug<a class="headerlink" href="#change-0.5.0-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.5.0-6"><span class="target" id="change-ae05f9f39c819ed9cef1962598186b2f"><strong>[bug] [postgresql] </strong></span>Fixed format of RENAME for table that includes schema with Postgresql; the schema name shouldn’t be in the “TO” field.<a class="changeset-link headerlink reference internal" href="#change-ae05f9f39c819ed9cef1962598186b2f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/32/">#32</a></p> </p> </li> <li><p id="change-0.5.0-7"><span class="target" id="change-3ceaed79e3eee38b675683a25b901c63"><strong>[bug] [mssql] </strong></span>Fixed bug whereby double quoting would be applied to target column name during an <code class="docutils literal"><span class="pre">sp_rename</span></code> operation.<a class="changeset-link headerlink reference internal" href="#change-3ceaed79e3eee38b675683a25b901c63">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/109/">#109</a></p> </p> </li> <li><p id="change-0.5.0-8"><span class="target" id="change-77934556af5d1f9af69a879cf7ad2858"><strong>[bug] [sqlite] [mysql] </strong></span>transactional_ddl flag for SQLite, MySQL dialects set to False. MySQL doesn’t support it, SQLite does but current pysqlite driver does not.<a class="changeset-link headerlink reference internal" href="#change-77934556af5d1f9af69a879cf7ad2858">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/112/">#112</a></p> </p> </li> <li><p id="change-0.5.0-9"><span class="target" id="change-aee549930b2cceefac966a434463ac0f"><strong>[bug] </strong></span>Autogenerate will render additional table keyword arguments like “mysql_engine” and others within op.create_table().<a class="changeset-link headerlink reference internal" href="#change-aee549930b2cceefac966a434463ac0f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/110/">#110</a></p> </p> </li> <li><p id="change-0.5.0-10"><span class="target" id="change-f6193b4d3fa49d70a624c774180a67a7"><strong>[bug] </strong></span>Fixed bug whereby create_index() would include in the constraint columns that are added to all Table objects using events, externally to the generation of the constraint. This is the same issue that was fixed for unique constraints in version 0.3.2.<a class="changeset-link headerlink reference internal" href="#change-f6193b4d3fa49d70a624c774180a67a7">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.5.0-11"><span class="target" id="change-6e919cc46f4044ed08366ca619516b1d"><strong>[bug] </strong></span>Worked around a backwards-incompatible regression in Python3.3 regarding argparse; running “alembic” with no arguments now yields an informative error in py3.3 as with all previous versions. Courtesy Andrey Antukh.<a class="changeset-link headerlink reference internal" href="#change-6e919cc46f4044ed08366ca619516b1d">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.5.0-12"><span class="target" id="change-6084ec2cdaea0d6f32ae9f918a592e90"><strong>[bug] </strong></span>A host of argument name changes within migration operations for consistency. Keyword arguments will continue to work on the old name for backwards compatibility, however required positional arguments will not:<blockquote> <div><a class="reference internal" href="ops.html#alembic.operations.Operations.alter_column" title="alembic.operations.Operations.alter_column"><code class="xref py py-meth docutils literal"><span class="pre">Operations.alter_column()</span></code></a> - <code class="docutils literal"><span class="pre">name</span></code> -> <code class="docutils literal"><span class="pre">new_column_name</span></code> - old name will work for backwards compatibility.<p><a class="reference internal" href="ops.html#alembic.operations.Operations.create_index" title="alembic.operations.Operations.create_index"><code class="xref py py-meth docutils literal"><span class="pre">Operations.create_index()</span></code></a> - <code class="docutils literal"><span class="pre">tablename</span></code> -> <code class="docutils literal"><span class="pre">table_name</span></code> - argument is positional.</p> <p><a class="reference internal" href="ops.html#alembic.operations.Operations.drop_index" title="alembic.operations.Operations.drop_index"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_index()</span></code></a> - <code class="docutils literal"><span class="pre">tablename</span></code> -> <code class="docutils literal"><span class="pre">table_name</span></code> - old name will work for backwards compatibility.</p> <p><a class="reference internal" href="ops.html#alembic.operations.Operations.drop_constraint" title="alembic.operations.Operations.drop_constraint"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_constraint()</span></code></a> - <code class="docutils literal"><span class="pre">tablename</span></code> -> <code class="docutils literal"><span class="pre">table_name</span></code> - argument is positional.</p> <p><a class="reference internal" href="ops.html#alembic.operations.Operations.drop_constraint" title="alembic.operations.Operations.drop_constraint"><code class="xref py py-meth docutils literal"><span class="pre">Operations.drop_constraint()</span></code></a> - <code class="docutils literal"><span class="pre">type</span></code> -> <code class="docutils literal"><span class="pre">type_</span></code> - old name will work for backwards compatibility</p> </div></blockquote> <a class="changeset-link headerlink reference internal" href="#change-6084ec2cdaea0d6f32ae9f918a592e90">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/104/">#104</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.5.0-misc"> <h3>misc<a class="headerlink" href="#change-0.5.0-misc" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.5.0-13"><span class="target" id="change-ea81e9cbb239d6be28134dc135a745e9"><strong>[change] </strong></span>SQLAlchemy 0.6 is no longer supported by Alembic - minimum version is 0.7.3, full support is as of 0.7.9.<a class="changeset-link headerlink reference internal" href="#change-ea81e9cbb239d6be28134dc135a745e9">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.4.2"> <h2>0.4.2<a class="headerlink" href="#change-0.4.2" title="Permalink to this headline">ΒΆ</a></h2> Released: Fri Jan 11 2013<div class="section" id="change-0.4.2-feature"> <h3>feature<a class="headerlink" href="#change-0.4.2-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.4.2-0"><span class="target" id="change-d207f84c16109708f5cddc54f7722467"><strong>[feature] </strong></span>Added a README.unittests with instructions for running the test suite fully.<a class="changeset-link headerlink reference internal" href="#change-d207f84c16109708f5cddc54f7722467">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/96/">#96</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.4.2-bug"> <h3>bug<a class="headerlink" href="#change-0.4.2-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.4.2-1"><span class="target" id="change-45a44bd6cfb1bc17ccb913636b67e518"><strong>[bug] [autogenerate] </strong></span>Fixed bug where autogenerate would fail if a Column to be added to a table made use of the ”.key” paramter.<a class="changeset-link headerlink reference internal" href="#change-45a44bd6cfb1bc17ccb913636b67e518">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/99/">#99</a></p> </p> </li> <li><p id="change-0.4.2-2"><span class="target" id="change-05aaf6cacc7032ceb71f3582d8108f4d"><strong>[bug] [sqlite] </strong></span>The “implicit” constraint generated by a type such as Boolean or Enum will not generate an ALTER statement when run on SQlite, which does not support ALTER for the purpose of adding/removing constraints separate from the column def itself. While SQLite supports adding a CHECK constraint at the column level, SQLAlchemy would need modification to support this. A warning is emitted indicating this constraint cannot be added in this scenario.<a class="changeset-link headerlink reference internal" href="#change-05aaf6cacc7032ceb71f3582d8108f4d">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/98/">#98</a></p> </p> </li> <li><p id="change-0.4.2-3"><span class="target" id="change-e4421a8d7ed895e7ba1f116055564d70"><strong>[bug] </strong></span>Added a workaround to setup.py to prevent “NoneType” error from occuring when “setup.py test” is run.<a class="changeset-link headerlink reference internal" href="#change-e4421a8d7ed895e7ba1f116055564d70">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/96/">#96</a></p> </p> </li> <li><p id="change-0.4.2-4"><span class="target" id="change-2dfa99e708aed4b0abbad1a864bf5fc4"><strong>[bug] </strong></span>Added an append_constraint() step to each condition within test_autogenerate:AutogenRenderTest.test_render_fk_constraint_kwarg if the SQLAlchemy version is less than 0.8, as ForeignKeyConstraint does not auto-append prior to 0.8.<a class="changeset-link headerlink reference internal" href="#change-2dfa99e708aed4b0abbad1a864bf5fc4">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/96/">#96</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.4.1"> <h2>0.4.1<a class="headerlink" href="#change-0.4.1" title="Permalink to this headline">ΒΆ</a></h2> Released: Sun Dec 9 2012<div class="section" id="change-0.4.1-feature"> <h3>feature<a class="headerlink" href="#change-0.4.1-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.4.1-0"><span class="target" id="change-5d1492191e209fdc33b2e2d8e271e585"><strong>[feature] </strong></span>Explicit error message describing the case when downgrade –sql is used without specifying specific start/end versions.<a class="changeset-link headerlink reference internal" href="#change-5d1492191e209fdc33b2e2d8e271e585">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/66/">#66</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.4.1-bug"> <h3>bug<a class="headerlink" href="#change-0.4.1-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.4.1-1"><span class="target" id="change-4e3d73095ce733c33d91575ef55f659e"><strong>[bug] </strong></span>Added support for autogenerate render of ForeignKeyConstraint options onupdate, ondelete, initially, and deferred.<a class="changeset-link headerlink reference internal" href="#change-4e3d73095ce733c33d91575ef55f659e">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/92/">#92</a></p> </p> </li> <li><p id="change-0.4.1-2"><span class="target" id="change-b2375af17815f3cc722b670d5184a4cb"><strong>[bug] </strong></span>Autogenerate will include “autoincrement=False” in the rendered table metadata if this flag was set to false on the source <code class="xref py py-class docutils literal"><span class="pre">Column</span></code> object.<a class="changeset-link headerlink reference internal" href="#change-b2375af17815f3cc722b670d5184a4cb">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/94/">#94</a></p> </p> </li> <li><p id="change-0.4.1-3"><span class="target" id="change-71a4a1da2935282b724147cda3b83236"><strong>[bug] </strong></span>Removed erroneous “emit_events” attribute from operations.create_table() documentation.<a class="changeset-link headerlink reference internal" href="#change-71a4a1da2935282b724147cda3b83236">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/81/">#81</a></p> </p> </li> <li><p id="change-0.4.1-4"><span class="target" id="change-83ea9fdb69e6700c2af5115a14f1e1b5"><strong>[bug] </strong></span>Fixed the minute component in file_template which returned the month part of the create date.<a class="changeset-link headerlink reference internal" href="#change-83ea9fdb69e6700c2af5115a14f1e1b5">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.4.0"> <h2>0.4.0<a class="headerlink" href="#change-0.4.0" title="Permalink to this headline">ΒΆ</a></h2> Released: Mon Oct 01 2012<div class="section" id="change-0.4.0-feature"> <h3>feature<a class="headerlink" href="#change-0.4.0-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.4.0-0"><span class="target" id="change-9b1299fcb16787d5a3edd744879d4f81"><strong>[feature] </strong></span>Support for tables in alternate schemas has been added fully to all operations, as well as to the autogenerate feature. When using autogenerate, specifying the flag include_schemas=True to Environment.configure() will also cause autogenerate to scan all schemas located by Inspector.get_schema_names(), which is supported by <em>some</em> (but not all) SQLAlchemy dialects including Postgresql. <em>Enormous</em> thanks to Bruno Binet for a huge effort in implementing as well as writing tests. .<a class="changeset-link headerlink reference internal" href="#change-9b1299fcb16787d5a3edd744879d4f81">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/33/">#33</a></p> </p> </li> <li><p id="change-0.4.0-1"><span class="target" id="change-256bc913e99949e5f61598f615db8c50"><strong>[feature] </strong></span>The command line runner has been organized into a reusable CommandLine object, so that other front-ends can re-use the argument parsing built in.<a class="changeset-link headerlink reference internal" href="#change-256bc913e99949e5f61598f615db8c50">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/70/">#70</a></p> </p> </li> <li><p id="change-0.4.0-2"><span class="target" id="change-a2f7d3fc1d4dd8c17688312bbf743b75"><strong>[feature] </strong></span>Added “stdout” option to Config, provides control over where the “print” output of commands like “history”, “init”, “current” etc. are sent.<a class="changeset-link headerlink reference internal" href="#change-a2f7d3fc1d4dd8c17688312bbf743b75">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/43/">#43</a></p> </p> </li> <li><p id="change-0.4.0-3"><span class="target" id="change-4d004eb1dc79a217abe8c4b14b1eb8c1"><strong>[feature] </strong></span>Added support for alteration of MySQL columns that have AUTO_INCREMENT, as well as enabling this flag. Courtesy Moriyoshi Koizumi.<a class="changeset-link headerlink reference internal" href="#change-4d004eb1dc79a217abe8c4b14b1eb8c1">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.4.0-bug"> <h3>bug<a class="headerlink" href="#change-0.4.0-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.4.0-4"><span class="target" id="change-60fcb783e2619c2d3c7dff34807da8f2"><strong>[bug] </strong></span>Fixed the “multidb” template which was badly out of date. It now generates revision files using the configuration to determine the different upgrade_<xyz>() methods needed as well, instead of needing to hardcode these. Huge thanks to BryceLohr for doing the heavy lifting here.<a class="changeset-link headerlink reference internal" href="#change-60fcb783e2619c2d3c7dff34807da8f2">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/71/">#71</a></p> </p> </li> <li><p id="change-0.4.0-5"><span class="target" id="change-562d7c0c8922e49234572d05b4e8eb7f"><strong>[bug] </strong></span>Fixed the regexp that was checking for .py files in the version directory to allow any .py file through. Previously it was doing some kind of defensive checking, probably from some early notions of how this directory works, that was prohibiting various filename patterns such as those which begin with numbers.<a class="changeset-link headerlink reference internal" href="#change-562d7c0c8922e49234572d05b4e8eb7f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/72/">#72</a></p> </p> </li> <li><p id="change-0.4.0-6"><span class="target" id="change-faef85831d9f0866054182696400548e"><strong>[bug] </strong></span>Fixed MySQL rendering for server_default which didn’t work if the server_default was a generated SQL expression. Courtesy Moriyoshi Koizumi.<a class="changeset-link headerlink reference internal" href="#change-faef85831d9f0866054182696400548e">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.3.6"> <h2>0.3.6<a class="headerlink" href="#change-0.3.6" title="Permalink to this headline">ΒΆ</a></h2> Released: Wed Aug 15 2012<div class="section" id="change-0.3.6-feature"> <h3>feature<a class="headerlink" href="#change-0.3.6-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.6-0"><span class="target" id="change-50b5e8b5db1d6da813197a308f978d92"><strong>[feature] </strong></span>Added include_symbol option to EnvironmentContext.configure(), specifies a callable which will include/exclude tables in their entirety from the autogeneration process based on name.<a class="changeset-link headerlink reference internal" href="#change-50b5e8b5db1d6da813197a308f978d92">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/27/">#27</a></p> </p> </li> <li><p id="change-0.3.6-1"><span class="target" id="change-8bf61dc5da45349affc396c2d229ac65"><strong>[feature] </strong></span>Added year, month, day, hour, minute, second variables to file_template.<a class="changeset-link headerlink reference internal" href="#change-8bf61dc5da45349affc396c2d229ac65">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/59/">#59</a></p> </p> </li> <li><p id="change-0.3.6-2"><span class="target" id="change-1ab161c769d09a63315ac32834ffacaf"><strong>[feature] </strong></span>Added ‘primary’ to the list of constraint types recognized for MySQL drop_constraint().<a class="changeset-link headerlink reference internal" href="#change-1ab161c769d09a63315ac32834ffacaf">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.3.6-3"><span class="target" id="change-5fb90f5f2f96678fc971d3ab5c8a0efa"><strong>[feature] </strong></span>Added –sql argument to the “revision” command, for the use case where the “revision_environment” config option is being used but SQL access isn’t desired.<a class="changeset-link headerlink reference internal" href="#change-5fb90f5f2f96678fc971d3ab5c8a0efa">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.3.6-bug"> <h3>bug<a class="headerlink" href="#change-0.3.6-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.6-4"><span class="target" id="change-a4109feae5103c32fff5c87edd36c87a"><strong>[bug] </strong></span>Repaired create_foreign_key() for self-referential foreign keys, which weren’t working at all.<a class="changeset-link headerlink reference internal" href="#change-a4109feae5103c32fff5c87edd36c87a">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.3.6-5"><span class="target" id="change-bfcc03669e1796b7305cff4bd5352cec"><strong>[bug] </strong></span>‘alembic’ command reports an informative error message when the configuration is missing the ‘script_directory’ key.<a class="changeset-link headerlink reference internal" href="#change-bfcc03669e1796b7305cff4bd5352cec">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/63/">#63</a></p> </p> </li> <li><p id="change-0.3.6-6"><span class="target" id="change-e2af8c0f5b9665f4875c0e7a303fd863"><strong>[bug] </strong></span>Fixes made to the constraints created/dropped alongside so-called “schema” types such as Boolean and Enum. The create/drop constraint logic does not kick in when using a dialect that doesn’t use constraints for these types, such as postgresql, even when existing_type is specified to alter_column(). Additionally, the constraints are not affected if existing_type is passed but type_ is not, i.e. there’s no net change in type.<a class="changeset-link headerlink reference internal" href="#change-e2af8c0f5b9665f4875c0e7a303fd863">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/62/">#62</a></p> </p> </li> <li><p id="change-0.3.6-7"><span class="target" id="change-19cad4c5c64f86362305cb73e9987c45"><strong>[bug] </strong></span>Improved error message when specifiying non-ordered revision identifiers to cover the case when the “higher” rev is None, improved message overall.<a class="changeset-link headerlink reference internal" href="#change-19cad4c5c64f86362305cb73e9987c45">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/66/">#66</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.3.5"> <h2>0.3.5<a class="headerlink" href="#change-0.3.5" title="Permalink to this headline">ΒΆ</a></h2> Released: Sun Jul 08 2012<div class="section" id="change-0.3.5-feature"> <h3>feature<a class="headerlink" href="#change-0.3.5-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.5-0"><span class="target" id="change-702c3ef26a6bbe78644e304cdf6c97dc"><strong>[feature] </strong></span>Implemented SQL rendering for CheckConstraint() within autogenerate upgrade, including for literal SQL as well as SQL Expression Language expressions.<a class="changeset-link headerlink reference internal" href="#change-702c3ef26a6bbe78644e304cdf6c97dc">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.3.5-bug"> <h3>bug<a class="headerlink" href="#change-0.3.5-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.5-1"><span class="target" id="change-fba487fa7c2eb6a0aac1b479a4f4581b"><strong>[bug] </strong></span>Fixed issue whereby reflected server defaults wouldn’t be quoted correctly; uses repr() now.<a class="changeset-link headerlink reference internal" href="#change-fba487fa7c2eb6a0aac1b479a4f4581b">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/31/">#31</a></p> </p> </li> <li><p id="change-0.3.5-2"><span class="target" id="change-63991eb331c186489985b2961617f94a"><strong>[bug] </strong></span>Fixed issue whereby when autogenerate would render create_table() on the upgrade side for a table that has a Boolean type, an unnecessary CheckConstraint() would be generated.<a class="changeset-link headerlink reference internal" href="#change-63991eb331c186489985b2961617f94a">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/58/">#58</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.3.4"> <h2>0.3.4<a class="headerlink" href="#change-0.3.4" title="Permalink to this headline">ΒΆ</a></h2> Released: Sat Jun 02 2012<div class="section" id="change-0.3.4-bug"> <h3>bug<a class="headerlink" href="#change-0.3.4-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.4-0"><span class="target" id="change-dbecb3724f5f321fb61f73677fbb91af"><strong>[bug] </strong></span>Fixed command-line bug introduced by the “revision_environment” feature.<a class="changeset-link headerlink reference internal" href="#change-dbecb3724f5f321fb61f73677fbb91af">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.3.3"> <h2>0.3.3<a class="headerlink" href="#change-0.3.3" title="Permalink to this headline">ΒΆ</a></h2> Released: Sat Jun 02 2012<div class="section" id="change-0.3.3-feature"> <h3>feature<a class="headerlink" href="#change-0.3.3-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.3-0"><span class="target" id="change-6ad1e20f5d28df802007006218e656f2"><strong>[feature] </strong></span>New config argument “revision_environment=true”, causes env.py to be run unconditionally when the “revision” command is run, to support script.py.mako templates with dependencies on custom “template_args”.<a class="changeset-link headerlink reference internal" href="#change-6ad1e20f5d28df802007006218e656f2">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.3.3-1"><span class="target" id="change-b844b5824bf2a8994775e9ea199c302f"><strong>[feature] </strong></span>Added “template_args” option to configure() so that an env.py can add additional arguments to the template context when running the “revision” command. This requires either –autogenerate or the configuration directive “revision_environment=true”.<a class="changeset-link headerlink reference internal" href="#change-b844b5824bf2a8994775e9ea199c302f">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.3.3-2"><span class="target" id="change-f86a13e1f5037e1613d8551fdfe3413c"><strong>[feature] </strong></span>Added version_table argument to EnvironmentContext.configure(), allowing for the configuration of the version table name.<a class="changeset-link headerlink reference internal" href="#change-f86a13e1f5037e1613d8551fdfe3413c">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/34/">#34</a></p> </p> </li> <li><p id="change-0.3.3-3"><span class="target" id="change-4083dba0217c503213f2d5624b2eb68f"><strong>[feature] </strong></span>Added support for “relative” migration identifiers, i.e. “alembic upgrade +2”, “alembic downgrade -1”. Courtesy Atsushi Odagiri for this feature.<a class="changeset-link headerlink reference internal" href="#change-4083dba0217c503213f2d5624b2eb68f">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.3.3-bug"> <h3>bug<a class="headerlink" href="#change-0.3.3-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.3-4"><span class="target" id="change-9b359b67f8c971c3e297f0e7a43961d6"><strong>[bug] </strong></span>Added “type” argument to op.drop_constraint(), and implemented full constraint drop support for MySQL. CHECK and undefined raise an error. MySQL needs the constraint type in order to emit a DROP CONSTRAINT.<a class="changeset-link headerlink reference internal" href="#change-9b359b67f8c971c3e297f0e7a43961d6">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/44/">#44</a></p> </p> </li> <li><p id="change-0.3.3-5"><span class="target" id="change-6a2380fc3246033a4dc5b92bfbb4a912"><strong>[bug] </strong></span>Fixed bug whereby directories inside of the template directories, such as __pycache__ on Pypy, would mistakenly be interpreted as files which are part of the template.<a class="changeset-link headerlink reference internal" href="#change-6a2380fc3246033a4dc5b92bfbb4a912">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/49/">#49</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.3.2"> <h2>0.3.2<a class="headerlink" href="#change-0.3.2" title="Permalink to this headline">ΒΆ</a></h2> Released: Mon Apr 30 2012<div class="section" id="change-0.3.2-feature"> <h3>feature<a class="headerlink" href="#change-0.3.2-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.2-0"><span class="target" id="change-11f35c8973f5b01ad5fa1a839697b59a"><strong>[feature] </strong></span>Basic support for Oracle added, courtesy shgoh.<a class="changeset-link headerlink reference internal" href="#change-11f35c8973f5b01ad5fa1a839697b59a">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/40/">#40</a></p> </p> </li> <li><p id="change-0.3.2-1"><span class="target" id="change-b354cc9151751dfccba00da896bc7e7f"><strong>[feature] </strong></span>Added support for UniqueConstraint in autogenerate, courtesy Atsushi Odagiri<a class="changeset-link headerlink reference internal" href="#change-b354cc9151751dfccba00da896bc7e7f">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.3.2-bug"> <h3>bug<a class="headerlink" href="#change-0.3.2-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.2-2"><span class="target" id="change-54479ea31f6f572c1a819096c163104e"><strong>[bug] </strong></span>Fixed support of schema-qualified ForeignKey target in column alter operations, courtesy Alexander Kolov.<a class="changeset-link headerlink reference internal" href="#change-54479ea31f6f572c1a819096c163104e">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.3.2-3"><span class="target" id="change-78b69d3937bf1c24df3ee1b3266dfa9c"><strong>[bug] </strong></span>Fixed bug whereby create_unique_constraint() would include in the constraint columns that are added to all Table objects using events, externally to the generation of the constraint.<a class="changeset-link headerlink reference internal" href="#change-78b69d3937bf1c24df3ee1b3266dfa9c">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.3.1"> <h2>0.3.1<a class="headerlink" href="#change-0.3.1" title="Permalink to this headline">ΒΆ</a></h2> Released: Sat Apr 07 2012<div class="section" id="change-0.3.1-bug"> <h3>bug<a class="headerlink" href="#change-0.3.1-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.1-0"><span class="target" id="change-e6bddcb7cfc7dd08ce1ebf56c4cd75f7"><strong>[bug] </strong></span>bulk_insert() fixes:<blockquote> <div><ol class="arabic"> <li>bulk_insert() operation was not working most likely since the 0.2 series when used with an engine.</li> <li>Repaired bulk_insert() to complete when used against a lower-case-t table and executing with only one set of parameters, working around SQLAlchemy bug #2461 in this regard.</li> <li>bulk_insert() uses “inline=True” so that phrases like RETURNING and such don’t get invoked for single-row bulk inserts.</li> <li>bulk_insert() will check that you’re passing a list of dictionaries in, raises TypeError if not detected.</li> </ol> </div></blockquote> <a class="changeset-link headerlink reference internal" href="#change-e6bddcb7cfc7dd08ce1ebf56c4cd75f7">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/41/">#41</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.3.0"> <h2>0.3.0<a class="headerlink" href="#change-0.3.0" title="Permalink to this headline">ΒΆ</a></h2> Released: Thu Apr 05 2012<div class="section" id="change-0.3.0-feature"> <h3>feature<a class="headerlink" href="#change-0.3.0-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.0-0"><span class="target" id="change-d74b8be921f581f9c8d83a854ac2e058"><strong>[feature] </strong></span>Added a bit of autogenerate to the public API in the form of the function alembic.autogenerate.compare_metadata.<a class="changeset-link headerlink reference internal" href="#change-d74b8be921f581f9c8d83a854ac2e058">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.3.0-misc"> <h3>misc<a class="headerlink" href="#change-0.3.0-misc" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.3.0-1"><span class="target" id="change-9bea060194208b5b93a887ec9e9a4ea3"><strong>[general] </strong></span>The focus of 0.3 is to clean up and more fully document the public API of Alembic, including better accessors on the MigrationContext and ScriptDirectory objects. Methods that are not considered to be public on these objects have been underscored, and methods which should be public have been cleaned up and documented, including:<blockquote> <div>MigrationContext.get_current_revision() ScriptDirectory.iterate_revisions() ScriptDirectory.get_current_head() ScriptDirectory.get_heads() ScriptDirectory.get_base() ScriptDirectory.generate_revision()</div></blockquote> <a class="changeset-link headerlink reference internal" href="#change-9bea060194208b5b93a887ec9e9a4ea3">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.2.2"> <h2>0.2.2<a class="headerlink" href="#change-0.2.2" title="Permalink to this headline">ΒΆ</a></h2> Released: Mon Mar 12 2012<div class="section" id="change-0.2.2-feature"> <h3>feature<a class="headerlink" href="#change-0.2.2-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.2.2-0"><span class="target" id="change-31e9ab1ef05dd2127cb4775df81aa2c4"><strong>[feature] </strong></span>Informative error message when op.XYZ directives are invoked at module import time.<a class="changeset-link headerlink reference internal" href="#change-31e9ab1ef05dd2127cb4775df81aa2c4">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.2.2-1"><span class="target" id="change-1dff9e522d76403d9af885164fd284e9"><strong>[feature] </strong></span>Added execution_options parameter to op.execute(), will call execution_options() on the Connection before executing.<p>The immediate use case here is to allow access to the new no_parameters option in SQLAlchemy 0.7.6, which allows some DBAPIs (psycopg2, MySQLdb) to allow percent signs straight through without escaping, thus providing cross-compatible operation with DBAPI execution and static script generation.</p> <a class="changeset-link headerlink reference internal" href="#change-1dff9e522d76403d9af885164fd284e9">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.2.2-2"><span class="target" id="change-6ecf74f311264ea5b943ed81cef59b41"><strong>[feature] </strong></span>script_location can be interpreted by pkg_resources.resource_filename(), if it is a non-absolute URI that contains colons. This scheme is the same one used by Pyramid.<a class="changeset-link headerlink reference internal" href="#change-6ecf74f311264ea5b943ed81cef59b41">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/29/">#29</a></p> </p> </li> <li><p id="change-0.2.2-3"><span class="target" id="change-eb02c33a6ae7ebdb1d15d6baa6908278"><strong>[feature] </strong></span>added missing support for onupdate/ondelete flags for ForeignKeyConstraint, courtesy Giacomo Bagnoli<a class="changeset-link headerlink reference internal" href="#change-eb02c33a6ae7ebdb1d15d6baa6908278">ΒΆ</a><p></p> </p> </li> </ul> </div> <div class="section" id="change-0.2.2-bug"> <h3>bug<a class="headerlink" href="#change-0.2.2-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.2.2-4"><span class="target" id="change-3ac60363e69dba9d296a183fadb4f425"><strong>[bug] </strong></span>Fixed inappropriate direct call to util.err() and therefore sys.exit() when Config failed to locate the config file within library usage.<a class="changeset-link headerlink reference internal" href="#change-3ac60363e69dba9d296a183fadb4f425">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/35/">#35</a></p> </p> </li> <li><p id="change-0.2.2-5"><span class="target" id="change-017cdecac20a7dd99654362880189d57"><strong>[bug] </strong></span>Autogenerate will emit CREATE TABLE and DROP TABLE directives according to foreign key dependency order.<a class="changeset-link headerlink reference internal" href="#change-017cdecac20a7dd99654362880189d57">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.2.2-6"><span class="target" id="change-e3e024ffb77c9436e5a43d11c291b072"><strong>[bug] </strong></span>implement ‘tablename’ parameter on drop_index() as this is needed by some backends.<a class="changeset-link headerlink reference internal" href="#change-e3e024ffb77c9436e5a43d11c291b072">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.2.2-7"><span class="target" id="change-a57a474f392fc1f7773d8f095795c652"><strong>[bug] </strong></span>setup.py won’t install argparse if on Python 2.7/3.2<a class="changeset-link headerlink reference internal" href="#change-a57a474f392fc1f7773d8f095795c652">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.2.2-8"><span class="target" id="change-e61d183980d6b843c73c9c00063e4b99"><strong>[bug] </strong></span>fixed a regression regarding an autogenerate error message, as well as various glitches in the Pylons sample template. The Pylons sample template requires that you tell it where to get the Engine from now. courtesy Marcin Kuzminski<a class="changeset-link headerlink reference internal" href="#change-e61d183980d6b843c73c9c00063e4b99">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/30/">#30</a></p> </p> </li> <li><p id="change-0.2.2-9"><span class="target" id="change-8a840870ac091491f2f7ce78feb57536"><strong>[bug] </strong></span>drop_index() ensures a dummy column is added when it calls “Index”, as SQLAlchemy 0.7.6 will warn on index with no column names.<a class="changeset-link headerlink reference internal" href="#change-8a840870ac091491f2f7ce78feb57536">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.2.1"> <h2>0.2.1<a class="headerlink" href="#change-0.2.1" title="Permalink to this headline">ΒΆ</a></h2> Released: Tue Jan 31 2012<div class="section" id="change-0.2.1-bug"> <h3>bug<a class="headerlink" href="#change-0.2.1-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.2.1-0"><span class="target" id="change-ddfa2f020fe4676dbc9ebb826761cedd"><strong>[bug] </strong></span>Fixed the generation of CHECK constraint, regression from 0.2.0<a class="changeset-link headerlink reference internal" href="#change-ddfa2f020fe4676dbc9ebb826761cedd">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/26/">#26</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.2.0"> <h2>0.2.0<a class="headerlink" href="#change-0.2.0" title="Permalink to this headline">ΒΆ</a></h2> Released: Mon Jan 30 2012<div class="section" id="change-0.2.0-feature"> <h3>feature<a class="headerlink" href="#change-0.2.0-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.2.0-0"><span class="target" id="change-227a7aaca2dc2c2529e3f199acdec57a"><strong>[feature] </strong></span>API rearrangement allows everything Alembic does to be represented by contextual objects, including EnvironmentContext, MigrationContext, and Operations. Other libraries and applications can now use things like “alembic.op” without relying upon global configuration variables. The rearrangement was done such that existing migrations should be OK, as long as they use the pattern of “from alembic import context” and “from alembic import op”, as these are now contextual objects, not modules.<a class="changeset-link headerlink reference internal" href="#change-227a7aaca2dc2c2529e3f199acdec57a">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/19/">#19</a></p> </p> </li> <li><p id="change-0.2.0-1"><span class="target" id="change-5969574fd983fb44688382a6b7e4ade0"><strong>[feature] </strong></span>The naming of revision files can now be customized to be some combination of “rev id” and “slug”, the latter of which is based on the revision message. By default, the pattern “<rev>_<slug>” is used for new files. New script files should include the “revision” variable for this to work, which is part of the newer script.py.mako scripts.<a class="changeset-link headerlink reference internal" href="#change-5969574fd983fb44688382a6b7e4ade0">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/24/">#24</a></p> </p> </li> <li><p id="change-0.2.0-2"><span class="target" id="change-11b37049b12c1fa41dd89a7576f4a02d"><strong>[feature] </strong></span>Can create alembic.config.Config with no filename, use set_main_option() to add values. Also added set_section_option() which will add sections.<a class="changeset-link headerlink reference internal" href="#change-11b37049b12c1fa41dd89a7576f4a02d">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/23/">#23</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.2.0-bug"> <h3>bug<a class="headerlink" href="#change-0.2.0-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.2.0-3"><span class="target" id="change-4da1339450ed512b388fd6f98927beb5"><strong>[bug] </strong></span>env.py templates call connection.close() to better support programmatic usage of commands; use NullPool in conjunction with create_engine() as well so that no connection resources remain afterwards.<a class="changeset-link headerlink reference internal" href="#change-4da1339450ed512b388fd6f98927beb5">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/25/">#25</a></p> </p> </li> <li><p id="change-0.2.0-4"><span class="target" id="change-a0b966d35927872805e4ab8873cc1ca2"><strong>[bug] </strong></span>fix the config.main() function to honor the arguments passed, remove no longer used “scripts/alembic” as setuptools creates this for us.<a class="changeset-link headerlink reference internal" href="#change-a0b966d35927872805e4ab8873cc1ca2">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/22/">#22</a></p> </p> </li> <li><p id="change-0.2.0-5"><span class="target" id="change-463a9dae4494b0adcb3d210e3cbd9fd0"><strong>[bug] </strong></span>Fixed alteration of column type on MSSQL to not include the keyword “TYPE”.<a class="changeset-link headerlink reference internal" href="#change-463a9dae4494b0adcb3d210e3cbd9fd0">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.1.1"> <h2>0.1.1<a class="headerlink" href="#change-0.1.1" title="Permalink to this headline">ΒΆ</a></h2> Released: Wed Jan 04 2012<div class="section" id="change-0.1.1-feature"> <h3>feature<a class="headerlink" href="#change-0.1.1-feature" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.1.1-0"><span class="target" id="change-5e0ab0b4bb77cc02b03e4a045b207fbb"><strong>[feature] </strong></span>PyPy is supported.<a class="changeset-link headerlink reference internal" href="#change-5e0ab0b4bb77cc02b03e4a045b207fbb">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.1-1"><span class="target" id="change-ec385420eb00e18aee59f0023a1d367a"><strong>[feature] </strong></span>Python 2.5 is supported, needs __future__.with_statement<a class="changeset-link headerlink reference internal" href="#change-ec385420eb00e18aee59f0023a1d367a">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.1-2"><span class="target" id="change-1317d390fab9cd845fa5832e074e3be7"><strong>[feature] </strong></span>Add alembic_module_prefix argument to configure() to complement sqlalchemy_module_prefix.<a class="changeset-link headerlink reference internal" href="#change-1317d390fab9cd845fa5832e074e3be7">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/18/">#18</a></p> </p> </li> </ul> </div> <div class="section" id="change-0.1.1-bug"> <h3>bug<a class="headerlink" href="#change-0.1.1-bug" title="Permalink to this headline">ΒΆ</a></h3> <ul class="simple"> <li><p id="change-0.1.1-3"><span class="target" id="change-ace63702014ec05799d1d78c8b16791f"><strong>[bug] </strong></span>Clean up file write operations so that file handles are closed.<a class="changeset-link headerlink reference internal" href="#change-ace63702014ec05799d1d78c8b16791f">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.1-4"><span class="target" id="change-01d57df3a5d28309b1f22c08ec7bb31e"><strong>[bug] </strong></span>Fix autogenerate so that “pass” is generated between the two comments if no net migrations were present.<a class="changeset-link headerlink reference internal" href="#change-01d57df3a5d28309b1f22c08ec7bb31e">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.1-5"><span class="target" id="change-7b771e8f748941c4fdbb6d56ed03a1db"><strong>[bug] </strong></span>Fix autogenerate bug that prevented correct reflection of a foreign-key referenced table in the list of “to remove”.<a class="changeset-link headerlink reference internal" href="#change-7b771e8f748941c4fdbb6d56ed03a1db">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/16/">#16</a></p> </p> </li> <li><p id="change-0.1.1-6"><span class="target" id="change-fcf03a3cc5cb4c5192ef2b071199e5ff"><strong>[bug] </strong></span>Fix bug where create_table() didn’t handle self-referential foreign key correctly<a class="changeset-link headerlink reference internal" href="#change-fcf03a3cc5cb4c5192ef2b071199e5ff">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/17/">#17</a></p> </p> </li> <li><p id="change-0.1.1-7"><span class="target" id="change-c91501ec04034b80454cce278b392074"><strong>[bug] </strong></span>Default prefix for autogenerate directives is “op.”, matching the mako templates.<a class="changeset-link headerlink reference internal" href="#change-c91501ec04034b80454cce278b392074">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/18/">#18</a></p> </p> </li> <li><p id="change-0.1.1-8"><span class="target" id="change-3b9ff7bf53c5f2888f6c0d508866f95f"><strong>[bug] </strong></span>fix quotes not being rendered in ForeignKeConstraint during autogenerate<a class="changeset-link headerlink reference internal" href="#change-3b9ff7bf53c5f2888f6c0d508866f95f">ΒΆ</a><p>References: <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issue/14/">#14</a></p> </p> </li> </ul> </div> </div> <div class="section" id="change-0.1.0"> <h2>0.1.0<a class="headerlink" href="#change-0.1.0" title="Permalink to this headline">ΒΆ</a></h2> Released: Wed Nov 30 2011<ul class="simple"> <li><p id="change-0.1.0-0"><span class="target" id="change-d90468ce526135f320bc9756e9dec309"></span>Initial release. Status of features:<a class="changeset-link headerlink reference internal" href="#change-d90468ce526135f320bc9756e9dec309">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-1"><span class="target" id="change-827df2ddfd68bd78a423065c02a5603f"></span>Alembic is used in at least one production environment, but should still be considered ALPHA LEVEL SOFTWARE as of this release, particularly in that many features are expected to be missing / unimplemented. Major API changes are not anticipated but for the moment nothing should be assumed.<p>The author asks that you <em>please</em> report all issues, missing features, workarounds etc. to the bugtracker, at <a class="reference external" href="https://bitbucket.org/zzzeek/alembic/issues/new">https://bitbucket.org/zzzeek/alembic/issues/new</a> .</p> <a class="changeset-link headerlink reference internal" href="#change-827df2ddfd68bd78a423065c02a5603f">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-2"><span class="target" id="change-19e53c2382ef1a7b5f9616a0eda0e90d"></span>Python 3 is supported and has been tested.<a class="changeset-link headerlink reference internal" href="#change-19e53c2382ef1a7b5f9616a0eda0e90d">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-3"><span class="target" id="change-1f25deca2b5d7bb9554f35e025239f7d"></span>The “Pylons” and “MultiDB” environment templates have not been directly tested - these should be considered to be samples to be modified as needed. Multiple database support itself is well tested, however.<a class="changeset-link headerlink reference internal" href="#change-1f25deca2b5d7bb9554f35e025239f7d">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-4"><span class="target" id="change-8a35e494319a1955f606683d245f947d"></span>Postgresql and MS SQL Server environments have been tested for several weeks in a production environment. In particular, some involved workarounds were implemented to allow fully-automated dropping of default- or constraint-holding columns with SQL Server.<a class="changeset-link headerlink reference internal" href="#change-8a35e494319a1955f606683d245f947d">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-5"><span class="target" id="change-d99858c9238ff25eb1c74e8f7fe23e45"></span>MySQL support has also been implemented to a basic degree, including MySQL’s awkward style of modifying columns being accommodated.<a class="changeset-link headerlink reference internal" href="#change-d99858c9238ff25eb1c74e8f7fe23e45">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-6"><span class="target" id="change-0bcc5a9c66f70cda5fdaaf31b0ce0c3e"></span>Other database environments not included among those three have <em>not</em> been tested, <em>at all</em>. This includes Firebird, Oracle, Sybase. Adding support for these backends should be straightforward. Please report all missing/ incorrect behaviors to the bugtracker! Patches are welcome here but are optional - please just indicate the exact format expected by the target database.<a class="changeset-link headerlink reference internal" href="#change-0bcc5a9c66f70cda5fdaaf31b0ce0c3e">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-7"><span class="target" id="change-4b55e4d42ba8fdcf3050cecac36107ed"></span>SQLite, as a backend, has almost no support for schema alterations to existing databases. The author would strongly recommend that SQLite not be used in a migration context - just dump your SQLite database into an intermediary format, then dump it back into a new schema. For dev environments, the dev installer should be building the whole DB from scratch. Or just use Postgresql, which is a much better database for non-trivial schemas. Requests for full ALTER support on SQLite should be reported to SQLite’s bug tracker at <a class="reference external" href="http://www.sqlite.org/src/wiki?name=Bug+Reports">http://www.sqlite.org/src/wiki?name=Bug+Reports</a>, as Alembic will not be implementing the “rename the table to a temptable then copy the data into a new table” workaround. Note that Alembic will at some point offer an extensible API so that you can implement commands like this yourself.<a class="changeset-link headerlink reference internal" href="#change-4b55e4d42ba8fdcf3050cecac36107ed">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-8"><span class="target" id="change-4a49127db40546e806c53443450ced50"></span>Well-tested directives include add/drop table, add/drop column, including support for SQLAlchemy “schema” types which generate additional CHECK constraints, i.e. Boolean, Enum. Other directives not included here have <em>not</em> been strongly tested in production, i.e. rename table, etc.<a class="changeset-link headerlink reference internal" href="#change-4a49127db40546e806c53443450ced50">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-9"><span class="target" id="change-9ae153c6234cbed85deed93244b725ca"></span>Both “online” and “offline” migrations, the latter being generated SQL scripts to hand off to a DBA, have been strongly production tested against Postgresql and SQL Server.<a class="changeset-link headerlink reference internal" href="#change-9ae153c6234cbed85deed93244b725ca">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-10"><span class="target" id="change-1f1b97118b6fcbbd345f7ae5f1aee08e"></span>Modify column type, default status, nullable, is functional and tested across PG, MSSQL, MySQL, but not yet widely tested in production usage.<a class="changeset-link headerlink reference internal" href="#change-1f1b97118b6fcbbd345f7ae5f1aee08e">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-11"><span class="target" id="change-5d178aa6493a1b141e953b284c26f3e4"></span>Many migrations are still outright missing, i.e. create/add sequences, etc. As a workaround, execute() can be used for those which are missing, though posting of tickets for new features/missing behaviors is strongly encouraged.<a class="changeset-link headerlink reference internal" href="#change-5d178aa6493a1b141e953b284c26f3e4">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-12"><span class="target" id="change-3d42011fdfe5fc3fab6550e1d567d1b8"></span>Autogenerate feature is implemented and has been tested, though only a little bit in a production setting. In particular, detection of type and server default changes are optional and are off by default; they can also be customized by a callable. Both features work but can have surprises particularly the disparity between BIT/TINYINT and boolean, which hasn’t yet been worked around, as well as format changes performed by the database on defaults when it reports back. When enabled, the PG dialect will execute the two defaults to be compared to see if they are equivalent. Other backends may need to do the same thing.<p>The autogenerate feature only generates “candidate” commands which must be hand-tailored in any case, so is still a useful feature and is safe to use. Please report missing/broken features of autogenerate! This will be a great feature and will also improve SQLAlchemy’s reflection services.</p> <a class="changeset-link headerlink reference internal" href="#change-3d42011fdfe5fc3fab6550e1d567d1b8">ΒΆ</a><p></p> </p> </li> <li><p id="change-0.1.0-13"><span class="target" id="change-a1553a278d22086c7e4b26a0e5195cd5"></span>Support for non-ASCII table, column and constraint names is mostly nonexistent. This is also a straightforward feature add as SQLAlchemy itself supports unicode identifiers; Alembic itself will likely need fixes to logging, column identification by key, etc. for full support here.<a class="changeset-link headerlink reference internal" href="#change-a1553a278d22086c7e4b26a0e5195cd5">ΒΆ</a><p></p> </p> </li> </ul> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3><a href="index.html">Table Of Contents</a></h3> <ul> <li><a class="reference internal" href="#">Changelog</a><ul> <li><a class="reference internal" href="#change-0.8.3">0.8.3</a><ul> <li><a class="reference internal" href="#change-0.8.3-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.8.2">0.8.2</a><ul> <li><a class="reference internal" href="#change-0.8.2-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.8.1">0.8.1</a><ul> <li><a class="reference internal" href="#change-0.8.1-feature">feature</a></li> <li><a class="reference internal" href="#change-0.8.1-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.8.0">0.8.0</a><ul> <li><a class="reference internal" href="#change-0.8.0-feature">feature</a></li> <li><a class="reference internal" href="#change-0.8.0-bug">bug</a></li> <li><a class="reference internal" href="#change-0.8.0-misc">misc</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.7">0.7.7</a><ul> <li><a class="reference internal" href="#change-0.7.7-feature">feature</a></li> <li><a class="reference internal" href="#change-0.7.7-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.6">0.7.6</a><ul> <li><a class="reference internal" href="#change-0.7.6-feature">feature</a></li> <li><a class="reference internal" href="#change-0.7.6-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.5">0.7.5</a><ul> <li><a class="reference internal" href="#change-0.7.5-feature">feature</a></li> <li><a class="reference internal" href="#change-0.7.5-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.4">0.7.4</a><ul> <li><a class="reference internal" href="#change-0.7.4-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.3">0.7.3</a><ul> <li><a class="reference internal" href="#change-0.7.3-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.2">0.7.2</a><ul> <li><a class="reference internal" href="#change-0.7.2-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.1">0.7.1</a><ul> <li><a class="reference internal" href="#change-0.7.1-feature">feature</a></li> <li><a class="reference internal" href="#change-0.7.1-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.7.0">0.7.0</a><ul> <li><a class="reference internal" href="#change-0.7.0-changed">changed</a></li> <li><a class="reference internal" href="#change-0.7.0-feature">feature</a></li> <li><a class="reference internal" href="#change-0.7.0-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.7">0.6.7</a><ul> <li><a class="reference internal" href="#change-0.6.7-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.7-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.6">0.6.6</a><ul> <li><a class="reference internal" href="#change-0.6.6-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.6-bug">bug</a></li> <li><a class="reference internal" href="#change-0.6.6-misc">misc</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.5">0.6.5</a><ul> <li><a class="reference internal" href="#change-0.6.5-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.5-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.4">0.6.4</a><ul> <li><a class="reference internal" href="#change-0.6.4-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.4-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.3">0.6.3</a><ul> <li><a class="reference internal" href="#change-0.6.3-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.3-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.2">0.6.2</a><ul> <li><a class="reference internal" href="#change-0.6.2-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.2-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.1">0.6.1</a><ul> <li><a class="reference internal" href="#change-0.6.1-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.1-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.6.0">0.6.0</a><ul> <li><a class="reference internal" href="#change-0.6.0-feature">feature</a></li> <li><a class="reference internal" href="#change-0.6.0-bug">bug</a></li> <li><a class="reference internal" href="#change-0.6.0-misc">misc</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.5.0">0.5.0</a><ul> <li><a class="reference internal" href="#change-0.5.0-feature">feature</a></li> <li><a class="reference internal" href="#change-0.5.0-bug">bug</a></li> <li><a class="reference internal" href="#change-0.5.0-misc">misc</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.4.2">0.4.2</a><ul> <li><a class="reference internal" href="#change-0.4.2-feature">feature</a></li> <li><a class="reference internal" href="#change-0.4.2-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.4.1">0.4.1</a><ul> <li><a class="reference internal" href="#change-0.4.1-feature">feature</a></li> <li><a class="reference internal" href="#change-0.4.1-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.4.0">0.4.0</a><ul> <li><a class="reference internal" href="#change-0.4.0-feature">feature</a></li> <li><a class="reference internal" href="#change-0.4.0-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.3.6">0.3.6</a><ul> <li><a class="reference internal" href="#change-0.3.6-feature">feature</a></li> <li><a class="reference internal" href="#change-0.3.6-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.3.5">0.3.5</a><ul> <li><a class="reference internal" href="#change-0.3.5-feature">feature</a></li> <li><a class="reference internal" href="#change-0.3.5-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.3.4">0.3.4</a><ul> <li><a class="reference internal" href="#change-0.3.4-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.3.3">0.3.3</a><ul> <li><a class="reference internal" href="#change-0.3.3-feature">feature</a></li> <li><a class="reference internal" href="#change-0.3.3-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.3.2">0.3.2</a><ul> <li><a class="reference internal" href="#change-0.3.2-feature">feature</a></li> <li><a class="reference internal" href="#change-0.3.2-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.3.1">0.3.1</a><ul> <li><a class="reference internal" href="#change-0.3.1-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.3.0">0.3.0</a><ul> <li><a class="reference internal" href="#change-0.3.0-feature">feature</a></li> <li><a class="reference internal" href="#change-0.3.0-misc">misc</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.2.2">0.2.2</a><ul> <li><a class="reference internal" href="#change-0.2.2-feature">feature</a></li> <li><a class="reference internal" href="#change-0.2.2-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.2.1">0.2.1</a><ul> <li><a class="reference internal" href="#change-0.2.1-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.2.0">0.2.0</a><ul> <li><a class="reference internal" href="#change-0.2.0-feature">feature</a></li> <li><a class="reference internal" href="#change-0.2.0-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.1.1">0.1.1</a><ul> <li><a class="reference internal" href="#change-0.1.1-feature">feature</a></li> <li><a class="reference internal" href="#change-0.1.1-bug">bug</a></li> </ul> </li> <li><a class="reference internal" href="#change-0.1.0">0.1.0</a></li> </ul> </li> </ul> <h4>Previous topic</h4> <p class="topless"><a href="api/ddl.html" title="previous chapter">DDL Internals</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="_sources/changelog.txt" rel="nofollow">Show Source</a></li> </ul> </div> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <form class="search" action="search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="api/ddl.html" title="DDL Internals" >previous</a> |</li> <li class="nav-item nav-item-0"><a href="index.html">Alembic 0.8.3 documentation</a> »</li> </ul> </div> <div class="footer" role="contentinfo"> © Copyright 2010-2015, Mike Bayer. Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.3.1. </div> </body> </html>
π»
System Info
Current path
/opt/alt/python27/share/doc/alt-python27-alembic/docs
Contents
5 folders, 15 files
Disk free
100.35 GB
PHP version
8.3.30
π
Quick Actions
π Script location
π Web root
ποΈ Temp
π /opt/alt/python27/share/doc/alt-python27-alembic/docs
β‘ Nexus File Manager β’ 20 items