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                0.3 Changelog
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    SQLAlchemy 0.9 Documentation

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        Release: <span class="version-num">0.9.8</span> | Release Date: October 13, 2014
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    <h1>SQLAlchemy 0.9 Documentation</h1>

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            <h3><a href="../index.html">SQLAlchemy 0.9 Documentation</a></h3>

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        <h3><a href="#">            
                0.3 Changelog
            
        </a></h3>
        <ul>
<li><a class="reference internal" href="#">0.3 Changelog</a><ul>
<li><a class="reference internal" href="#change-0.3.11">0.3.11</a><ul>
<li><a class="reference internal" href="#change-0.3.11-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.11-engine">engine</a></li>
<li><a class="reference internal" href="#change-0.3.11-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.11-mysql">mysql</a></li>
<li><a class="reference internal" href="#change-0.3.11-sqlite">sqlite</a></li>
<li><a class="reference internal" href="#change-0.3.11-mssql">mssql</a></li>
<li><a class="reference internal" href="#change-0.3.11-oracle">oracle</a></li>
<li><a class="reference internal" href="#change-0.3.11-firebird">firebird</a></li>
<li><a class="reference internal" href="#change-0.3.11-misc">misc</a></li>
</ul>
</li>
<li><a class="reference internal" href="#change-0.3.10">0.3.10</a><ul>
<li><a class="reference internal" href="#change-0.3.10-general">general</a></li>
<li><a class="reference internal" href="#change-0.3.10-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.10-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.10-misc">misc</a></li>
</ul>
</li>
<li><a class="reference internal" href="#change-0.3.9">0.3.9</a><ul>
<li><a class="reference internal" href="#change-0.3.9-general">general</a></li>
<li><a class="reference internal" href="#change-0.3.9-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.9-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.9-mysql">mysql</a></li>
<li><a class="reference internal" href="#change-0.3.9-sqlite">sqlite</a></li>
<li><a class="reference internal" href="#change-0.3.9-mssql">mssql</a></li>
<li><a class="reference internal" href="#change-0.3.9-oracle">oracle</a></li>
<li><a class="reference internal" href="#change-0.3.9-misc">misc</a></li>
</ul>
</li>
<li><a class="reference internal" href="#change-0.3.8">0.3.8</a><ul>
<li><a class="reference internal" href="#change-0.3.8-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.8-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.8-mysql">mysql</a></li>
<li><a class="reference internal" href="#change-0.3.8-firebird">firebird</a></li>
<li><a class="reference internal" href="#change-0.3.8-misc">misc</a></li>
</ul>
</li>
<li><a class="reference internal" href="#change-0.3.7">0.3.7</a><ul>
<li><a class="reference internal" href="#change-0.3.7-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.7-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.7-mysql">mysql</a></li>
<li><a class="reference internal" href="#change-0.3.7-sqlite">sqlite</a></li>
<li><a class="reference internal" href="#change-0.3.7-mssql">mssql</a></li>
<li><a class="reference internal" href="#change-0.3.7-oracle">oracle</a></li>
<li><a class="reference internal" href="#change-0.3.7-misc">misc</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-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.6-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.6-mysql">mysql</a></li>
<li><a class="reference internal" href="#change-0.3.6-oracle">oracle</a></li>
<li><a class="reference internal" href="#change-0.3.6-misc">misc</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-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.5-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.5-mysql">mysql</a></li>
<li><a class="reference internal" href="#change-0.3.5-mssql">mssql</a></li>
<li><a class="reference internal" href="#change-0.3.5-oracle">oracle</a></li>
<li><a class="reference internal" href="#change-0.3.5-misc">misc</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-general">general</a></li>
<li><a class="reference internal" href="#change-0.3.4-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.4-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.4-mysql">mysql</a></li>
<li><a class="reference internal" href="#change-0.3.4-mssql">mssql</a></li>
<li><a class="reference internal" href="#change-0.3.4-oracle">oracle</a></li>
<li><a class="reference internal" href="#change-0.3.4-firebird">firebird</a></li>
<li><a class="reference internal" href="#change-0.3.4-misc">misc</a></li>
</ul>
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<li><a class="reference internal" href="#change-0.3.2">0.3.2</a></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-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.1-misc">misc</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-general">general</a></li>
<li><a class="reference internal" href="#change-0.3.0-orm">orm</a></li>
<li><a class="reference internal" href="#change-0.3.0-sql">sql</a></li>
<li><a class="reference internal" href="#change-0.3.0-schema">schema</a></li>
<li><a class="reference internal" href="#change-0.3.0-sqlite">sqlite</a></li>
<li><a class="reference internal" href="#change-0.3.0-oracle">oracle</a></li>
<li><a class="reference internal" href="#change-0.3.0-firebird">firebird</a></li>
<li><a class="reference internal" href="#change-0.3.0-misc">misc</a></li>
</ul>
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</ul>




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<div class="section" id="changelog">
<h1>0.3 Changelog<a class="headerlink" href="#changelog" title="Permalink to this headline">¶</a></h1>
<div class="section" id="change-0.3.11">
<h2>0.3.11<a class="headerlink" href="#change-0.3.11" title="Permalink to this headline">¶</a></h2>
Released: Sun Oct 14 2007<div class="section" id="change-0.3.11-orm">
<h3>orm<a class="headerlink" href="#change-0.3.11-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-0"><span class="target" id="change-795ef475f7d4b812b08e3c6d684d0937"><strong>[orm] </strong></span>added a check for joining from A-&gt;B using join(), along two
different m2m tables.  this raises an error in 0.3 but is
possible in 0.4 when aliases are used.<a class="changeset-link headerlink reference internal" href="#change-795ef475f7d4b812b08e3c6d684d0937">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/687">#687</a></p>
</p>
</li>
<li><p id="change-0.3.11-1"><span class="target" id="change-88ee862c631f69b98c54fa871a991656"><strong>[orm] </strong></span>fixed small exception throw bug in Session.merge()<a class="changeset-link headerlink reference internal" href="#change-88ee862c631f69b98c54fa871a991656">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.11-2"><span class="target" id="change-bd9e04477cd60c6d6a7a4cebb7f0913a"><strong>[orm] </strong></span>fixed bug where mapper, being linked to a join where one table had
no PK columns, would not detect that the joined table had no PK.<a class="changeset-link headerlink reference internal" href="#change-bd9e04477cd60c6d6a7a4cebb7f0913a">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.11-3"><span class="target" id="change-1e038d2dbcdd2153030e7394dfd58f3d"><strong>[orm] </strong></span>fixed bugs in determining proper sync clauses from custom inherit
conditions<a class="changeset-link headerlink reference internal" href="#change-1e038d2dbcdd2153030e7394dfd58f3d">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/769">#769</a></p>
</p>
</li>
<li><p id="change-0.3.11-4"><span class="target" id="change-0e43e8232535b10db727543c77f728bd"><strong>[orm] </strong></span>backref remove object operation doesn&#8217;t fail if the other-side
collection doesn&#8217;t contain the item, supports noload collections<a class="changeset-link headerlink reference internal" href="#change-0e43e8232535b10db727543c77f728bd">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/813">#813</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-engine">
<h3>engine<a class="headerlink" href="#change-0.3.11-engine" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-5"><span class="target" id="change-a8031639e187f84e4aa5334fd71c2098"><strong>[engine] </strong></span>fixed another occasional race condition which could occur
when using pool with threadlocal setting<a class="changeset-link headerlink reference internal" href="#change-a8031639e187f84e4aa5334fd71c2098">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-sql">
<h3>sql<a class="headerlink" href="#change-0.3.11-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-6"><span class="target" id="change-606aa4f88278c9f53504856ea6950d76"><strong>[sql] </strong></span>tweak DISTINCT precedence for clauses like
<cite>func.count(t.c.col.distinct())</cite><a class="changeset-link headerlink reference internal" href="#change-606aa4f88278c9f53504856ea6950d76">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.11-7"><span class="target" id="change-d8d45d29d80bd66d00ef851e04a3f82b"><strong>[sql] </strong></span>Fixed detection of internal &#8216;$&#8217; characters in :bind$params<a class="changeset-link headerlink reference internal" href="#change-d8d45d29d80bd66d00ef851e04a3f82b">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/719">#719</a></p>
</p>
</li>
<li><p id="change-0.3.11-8"><span class="target" id="change-d5969ca86631966109273bba06c34ca5"><strong>[sql] </strong></span>don&#8217;t assume join criterion consists only of column objects<a class="changeset-link headerlink reference internal" href="#change-d5969ca86631966109273bba06c34ca5">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/768">#768</a></p>
</p>
</li>
<li><p id="change-0.3.11-9"><span class="target" id="change-adee1f3a5bf6063740c4e5d0d8759576"><strong>[sql] </strong></span>adjusted operator precedence of NOT to match &#8216;==&#8217; and others, so that
~(x==y) produces NOT (x=y), which is compatible with MySQL &lt; 5.0
(doesn&#8217;t like &#8220;NOT x=y&#8221;)<a class="changeset-link headerlink reference internal" href="#change-adee1f3a5bf6063740c4e5d0d8759576">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/764">#764</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-mysql">
<h3>mysql<a class="headerlink" href="#change-0.3.11-mysql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-10"><span class="target" id="change-0925c07610677ed2716dea213bbd0a75"><strong>[mysql] </strong></span>fixed specification of YEAR columns when generating schema<a class="changeset-link headerlink reference internal" href="#change-0925c07610677ed2716dea213bbd0a75">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-sqlite">
<h3>sqlite<a class="headerlink" href="#change-0.3.11-sqlite" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-11"><span class="target" id="change-cb3f35b104dcbe7a26298edfc829c240"><strong>[sqlite] </strong></span>passthrough for stringified dates<a class="changeset-link headerlink reference internal" href="#change-cb3f35b104dcbe7a26298edfc829c240">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-mssql">
<h3>mssql<a class="headerlink" href="#change-0.3.11-mssql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-12"><span class="target" id="change-9ae1839db8b6431a7d9a951df9db226f"><strong>[mssql] </strong></span>added support for TIME columns (simulated using DATETIME)<a class="changeset-link headerlink reference internal" href="#change-9ae1839db8b6431a7d9a951df9db226f">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/679">#679</a></p>
</p>
</li>
<li><p id="change-0.3.11-13"><span class="target" id="change-22d1b8a85d2e3fad306665d645da0f78"><strong>[mssql] </strong></span>added support for BIGINT, MONEY, SMALLMONEY, UNIQUEIDENTIFIER and
SQL_VARIANT<a class="changeset-link headerlink reference internal" href="#change-22d1b8a85d2e3fad306665d645da0f78">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/721">#721</a></p>
</p>
</li>
<li><p id="change-0.3.11-14"><span class="target" id="change-b1949f314913ce8e14c5552e9e90e924"><strong>[mssql] </strong></span>index names are now quoted when dropping from reflected tables<a class="changeset-link headerlink reference internal" href="#change-b1949f314913ce8e14c5552e9e90e924">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/684">#684</a></p>
</p>
</li>
<li><p id="change-0.3.11-15"><span class="target" id="change-dc27077ba3230cb424fcf4b4b8185ac1"><strong>[mssql] </strong></span>can now specify a DSN for PyODBC, using a URI like mssql:///?dsn=bob<a class="changeset-link headerlink reference internal" href="#change-dc27077ba3230cb424fcf4b4b8185ac1">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-oracle">
<h3>oracle<a class="headerlink" href="#change-0.3.11-oracle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-16"><span class="target" id="change-5f0bd7c8398c9a49d384e169dded9299"><strong>[oracle] </strong></span>removed LONG_STRING, LONG_BINARY from &#8220;binary&#8221; types, so type objects
don&#8217;t try to read their values as LOB.<a class="changeset-link headerlink reference internal" href="#change-5f0bd7c8398c9a49d384e169dded9299">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/622">#622</a>, <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/751">#751</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-firebird">
<h3>firebird<a class="headerlink" href="#change-0.3.11-firebird" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-17"><span class="target" id="change-68a13c0986d622612ea9b90a1e732d21"><strong>[firebird] </strong></span>supports_sane_rowcount() set to False due to ticket #370 (right way).<a class="changeset-link headerlink reference internal" href="#change-68a13c0986d622612ea9b90a1e732d21">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.11-18"><span class="target" id="change-6d153f889ecfbaa34265a173aef5720d"><strong>[firebird] </strong></span>fixed reflection of Column&#8217;s nullable property.<a class="changeset-link headerlink reference internal" href="#change-6d153f889ecfbaa34265a173aef5720d">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.11-misc">
<h3>misc<a class="headerlink" href="#change-0.3.11-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.11-19"><span class="target" id="change-c26caf7b92713b64413c6519ddfa159a"><strong>[postgres] </strong></span>when reflecting tables from alternate schemas, the &#8220;default&#8221; placed upon
the primary key, i.e. usually a sequence name, has the &#8220;schema&#8221; name
unconditionally quoted, so that schema names which need quoting are fine.
its slightly unnecessary for schema names which don&#8217;t need quoting
but not harmful.<a class="changeset-link headerlink reference internal" href="#change-c26caf7b92713b64413c6519ddfa159a">¶</a><p></p>
</p>
</li>
</ul>
</div>
</div>
<div class="section" id="change-0.3.10">
<h2>0.3.10<a class="headerlink" href="#change-0.3.10" title="Permalink to this headline">¶</a></h2>
Released: Fri Jul 20 2007<div class="section" id="change-0.3.10-general">
<h3>general<a class="headerlink" href="#change-0.3.10-general" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.10-0"><span class="target" id="change-d21e68c9886bf315a5224f8aedf8c2f0"><strong>[general] </strong></span>a new mutex that was added in 0.3.9 causes the pool_timeout
feature to fail during a race condition; threads would
raise TimeoutError immediately with no delay if many threads
push the pool into overflow at the same time.  this issue has been
fixed.<a class="changeset-link headerlink reference internal" href="#change-d21e68c9886bf315a5224f8aedf8c2f0">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.10-orm">
<h3>orm<a class="headerlink" href="#change-0.3.10-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.10-1"><span class="target" id="change-abc5c622ebf7f48299346d88e835234a"><strong>[orm] </strong></span>cleanup to connection-bound sessions, SessionTransaction<a class="changeset-link headerlink reference internal" href="#change-abc5c622ebf7f48299346d88e835234a">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.10-sql">
<h3>sql<a class="headerlink" href="#change-0.3.10-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.10-2"><span class="target" id="change-f1f6a898d9d4aad0cfea3d441d7da52c"><strong>[sql] </strong></span>got connection-bound metadata to work with implicit execution<a class="changeset-link headerlink reference internal" href="#change-f1f6a898d9d4aad0cfea3d441d7da52c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.10-3"><span class="target" id="change-513834dddb580f41af0e07c8084eedb6"><strong>[sql] </strong></span>foreign key specs can have any chararcter in their identifiers<a class="changeset-link headerlink reference internal" href="#change-513834dddb580f41af0e07c8084eedb6">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/667">#667</a></p>
</p>
</li>
<li><p id="change-0.3.10-4"><span class="target" id="change-2b2c84c6ab73af1cb0a95c1ef7da18e8"><strong>[sql] </strong></span>added commutativity-awareness to binary clause comparisons to
each other, improves ORM lazy load optimization<a class="changeset-link headerlink reference internal" href="#change-2b2c84c6ab73af1cb0a95c1ef7da18e8">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/664">#664</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.10-misc">
<h3>misc<a class="headerlink" href="#change-0.3.10-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.10-5"><span class="target" id="change-ad87700ec6114efcef15a751769a83f7"><strong>[postgres] </strong></span>fixed max identifier length (63)<a class="changeset-link headerlink reference internal" href="#change-ad87700ec6114efcef15a751769a83f7">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/571">#571</a></p>
</p>
</li>
</ul>
</div>
</div>
<div class="section" id="change-0.3.9">
<h2>0.3.9<a class="headerlink" href="#change-0.3.9" title="Permalink to this headline">¶</a></h2>
Released: Sun Jul 15 2007<div class="section" id="change-0.3.9-general">
<h3>general<a class="headerlink" href="#change-0.3.9-general" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-0"><span class="target" id="change-15b74e04e779630532bed8eb2cb6e6c1"><strong>[general] </strong></span>better error message for NoSuchColumnError<a class="changeset-link headerlink reference internal" href="#change-15b74e04e779630532bed8eb2cb6e6c1">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/607">#607</a></p>
</p>
</li>
<li><p id="change-0.3.9-1"><span class="target" id="change-1a63992eb7fa15d2defa97764255fbc0"><strong>[general] </strong></span>finally figured out how to get setuptools version in, available
as sqlalchemy.__version__<a class="changeset-link headerlink reference internal" href="#change-1a63992eb7fa15d2defa97764255fbc0">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/428">#428</a></p>
</p>
</li>
<li><p id="change-0.3.9-2"><span class="target" id="change-a914144f1b4a77794f443fe172406549"><strong>[general] </strong></span>the various &#8220;engine&#8221; arguments, such as &#8220;engine&#8221;, &#8220;connectable&#8221;,
&#8220;engine_or_url&#8221;, &#8220;bind_to&#8221;, etc. are all present, but deprecated.
they all get replaced by the single term &#8220;bind&#8221;.  you also
set the &#8220;bind&#8221; of MetaData using
metadata.bind = &lt;engine or connection&gt;<a class="changeset-link headerlink reference internal" href="#change-a914144f1b4a77794f443fe172406549">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.9-orm">
<h3>orm<a class="headerlink" href="#change-0.3.9-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-3"><span class="target" id="change-301449c29e0fd8c8dbf2a0cbf6bbb0a7"><strong>[orm] </strong></span>forwards-compatibility with 0.4: added one(), first(), and
all() to Query.  almost all Query functionality from 0.4 is
present in 0.3.9 for forwards-compat purposes.<a class="changeset-link headerlink reference internal" href="#change-301449c29e0fd8c8dbf2a0cbf6bbb0a7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-4"><span class="target" id="change-3d04848b5b90892e4896d27e42104550"><strong>[orm] </strong></span>reset_joinpoint() really really works this time, promise ! lets
you re-join from the root:
query.join([&#8216;a&#8217;, &#8216;b&#8217;]).filter(&lt;crit&gt;).reset_joinpoint().join([&#8216;a&#8217;, &#8216;c&#8217;]).filter(&lt;some other crit&gt;).all()
in 0.4 all join() calls start from the &#8220;root&#8221;<a class="changeset-link headerlink reference internal" href="#change-3d04848b5b90892e4896d27e42104550">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-5"><span class="target" id="change-a0eabad47f40a8f2c05402d784e913e5"><strong>[orm] </strong></span>added synchronization to the mapper() construction step, to avoid
thread collisions when pre-existing mappers are compiling in a
different thread<a class="changeset-link headerlink reference internal" href="#change-a0eabad47f40a8f2c05402d784e913e5">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/613">#613</a></p>
</p>
</li>
<li><p id="change-0.3.9-6"><span class="target" id="change-7511ce30f30748be291cfdd03fd2985c"><strong>[orm] </strong></span>a warning is issued by Mapper when two primary key columns of the
same name are munged into a single attribute.  this happens frequently
when mapping to joins (or inheritance).<a class="changeset-link headerlink reference internal" href="#change-7511ce30f30748be291cfdd03fd2985c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-7"><span class="target" id="change-2b84bfaaf17d2ee58aef7c2087b5d1a2"><strong>[orm] </strong></span>synonym() properties are fully supported by all Query joining/
with_parent operations<a class="changeset-link headerlink reference internal" href="#change-2b84bfaaf17d2ee58aef7c2087b5d1a2">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/598">#598</a></p>
</p>
</li>
<li><p id="change-0.3.9-8"><span class="target" id="change-29072b60d67f065003dc3d3c58fc4f41"><strong>[orm] </strong></span>fixed very stupid bug when deleting items with many-to-many
uselist=False relations<a class="changeset-link headerlink reference internal" href="#change-29072b60d67f065003dc3d3c58fc4f41">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-9"><span class="target" id="change-7c527faac0be51d0670878009672f72e"><strong>[orm] </strong></span>remember all that stuff about polymorphic_union ?  for
joined table inheritance ?  Funny thing...
You sort of don&#8217;t need it for joined table inheritance, you
can just string all the tables together via outerjoin().
The UNION still applies if concrete tables are involved,
though (since nothing to join them on).<a class="changeset-link headerlink reference internal" href="#change-7c527faac0be51d0670878009672f72e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-10"><span class="target" id="change-fe5f2850304952163433155f047967b3"><strong>[orm] </strong></span>small fix to eager loading to better work with eager loads
to polymorphic mappers that are using a straight &#8220;outerjoin&#8221;
clause<a class="changeset-link headerlink reference internal" href="#change-fe5f2850304952163433155f047967b3">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.9-sql">
<h3>sql<a class="headerlink" href="#change-0.3.9-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-11"><span class="target" id="change-5facd76a849bbd35a1d758bee9da40c8"><strong>[sql] </strong></span>ForeignKey to a table in a schema that&#8217;s not the default schema
requires the schema to be explicit; i.e. ForeignKey(&#8216;alt_schema.users.id&#8217;)<a class="changeset-link headerlink reference internal" href="#change-5facd76a849bbd35a1d758bee9da40c8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-12"><span class="target" id="change-cf52683aa8efacf1647755b6e2f1acf9"><strong>[sql] </strong></span>MetaData can now be constructed with an engine or url as the first
argument, just like BoundMetaData<a class="changeset-link headerlink reference internal" href="#change-cf52683aa8efacf1647755b6e2f1acf9">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-13"><span class="target" id="change-2539cd0d61dd58d959c61c6876dc1209"><strong>[sql] </strong></span>BoundMetaData is now deprecated, and MetaData is a direct substitute.<a class="changeset-link headerlink reference internal" href="#change-2539cd0d61dd58d959c61c6876dc1209">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-14"><span class="target" id="change-10f3b9882e40dd9a45d7188ae6a8237c"><strong>[sql] </strong></span>DynamicMetaData has been renamed to ThreadLocalMetaData.  the
DynamicMetaData name is deprecated and is an alias for ThreadLocalMetaData
or a regular MetaData if threadlocal=False<a class="changeset-link headerlink reference internal" href="#change-10f3b9882e40dd9a45d7188ae6a8237c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-15"><span class="target" id="change-03586a372d9beeedd862f01e0addc777"><strong>[sql] </strong></span>composite primary key is represented as a non-keyed set to allow for
composite keys consisting of cols with the same name; occurs within a
Join.  helps inheritance scenarios formulate correct PK.<a class="changeset-link headerlink reference internal" href="#change-03586a372d9beeedd862f01e0addc777">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-16"><span class="target" id="change-afa1167f3e5743e5abd5356d62de6046"><strong>[sql] </strong></span>improved ability to get the &#8220;correct&#8221; and most minimal set of primary key
columns from a join, equating foreign keys and otherwise equated columns.
this is also mostly to help inheritance scenarios formulate the best
choice of primary key columns.<a class="changeset-link headerlink reference internal" href="#change-afa1167f3e5743e5abd5356d62de6046">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/185">#185</a></p>
</p>
</li>
<li><p id="change-0.3.9-17"><span class="target" id="change-9c7cdd3f8030a2d57cf94f1f1f892b4c"><strong>[sql] </strong></span>added &#8216;bind&#8217; argument to Sequence.create()/drop(), ColumnDefault.execute()<a class="changeset-link headerlink reference internal" href="#change-9c7cdd3f8030a2d57cf94f1f1f892b4c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-18"><span class="target" id="change-81ad0a30acb500499415014b6aefd421"><strong>[sql] </strong></span>columns can be overridden in a reflected table with a &#8220;key&#8221;
attribute different than the column&#8217;s name, including for primary key
columns<a class="changeset-link headerlink reference internal" href="#change-81ad0a30acb500499415014b6aefd421">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/650">#650</a></p>
</p>
</li>
<li><p id="change-0.3.9-19"><span class="target" id="change-4b5d1e9e40c66d1b53a831c30e88292a"><strong>[sql] </strong></span>fixed &#8220;ambiguous column&#8221; result detection, when dupe col names exist
in a result<a class="changeset-link headerlink reference internal" href="#change-4b5d1e9e40c66d1b53a831c30e88292a">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/657">#657</a></p>
</p>
</li>
<li><p id="change-0.3.9-20"><span class="target" id="change-dc154cb277d63d3f13716fab650411d5"><strong>[sql] </strong></span>some enhancements to &#8220;column targeting&#8221;, the ability to match a column
to a &#8220;corresponding&#8221; column in another selectable.  this affects mostly
ORM ability to map to complex joins<a class="changeset-link headerlink reference internal" href="#change-dc154cb277d63d3f13716fab650411d5">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-21"><span class="target" id="change-a0f1f7110e545dcbde1e4a60d9b028cc"><strong>[sql] </strong></span>MetaData and all SchemaItems are safe to use with pickle.  slow
table reflections can be dumped into a pickled file to be reused later.
Just reconnect the engine to the metadata after unpickling.<a class="changeset-link headerlink reference internal" href="#change-a0f1f7110e545dcbde1e4a60d9b028cc">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/619">#619</a></p>
</p>
</li>
<li><p id="change-0.3.9-22"><span class="target" id="change-c1578db6e36277a7adc101ca74177397"><strong>[sql] </strong></span>added a mutex to QueuePool&#8217;s &#8220;overflow&#8221; calculation to prevent a race
condition that can bypass max_overflow<a class="changeset-link headerlink reference internal" href="#change-c1578db6e36277a7adc101ca74177397">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-23"><span class="target" id="change-3b19729cd27655192e7f677db9437a75"><strong>[sql] </strong></span>fixed grouping of compound selects to give correct results. will break
on sqlite in some cases, but those cases were producing incorrect
results anyway, sqlite doesn&#8217;t support grouped compound selects<a class="changeset-link headerlink reference internal" href="#change-3b19729cd27655192e7f677db9437a75">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/623">#623</a></p>
</p>
</li>
<li><p id="change-0.3.9-24"><span class="target" id="change-1a5573250745da4cc296c5478a905559"><strong>[sql] </strong></span>fixed precedence of operators so that parenthesis are correctly applied<a class="changeset-link headerlink reference internal" href="#change-1a5573250745da4cc296c5478a905559">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/620">#620</a></p>
</p>
</li>
<li><p id="change-0.3.9-25"><span class="target" id="change-f3c83d18250d490e0c0e719048bb5c78"><strong>[sql] </strong></span>calling &lt;column&gt;.in_() (i.e. with no arguments) will return
&#8220;CASE WHEN (&lt;column&gt; IS NULL) THEN NULL ELSE 0 END = 1)&#8221;, so that
NULL or False is returned in all cases, rather than throwing an error<a class="changeset-link headerlink reference internal" href="#change-f3c83d18250d490e0c0e719048bb5c78">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/545">#545</a></p>
</p>
</li>
<li><p id="change-0.3.9-26"><span class="target" id="change-29d36e2ae856641782a99036963ac096"><strong>[sql] </strong></span>fixed &#8220;where&#8221;/&#8221;from&#8221; criterion of select() to accept a unicode string
in addition to regular string - both convert to text()<a class="changeset-link headerlink reference internal" href="#change-29d36e2ae856641782a99036963ac096">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-27"><span class="target" id="change-d5193859e2955a59dd9b9689c9c46766"><strong>[sql] </strong></span>added standalone distinct() function in addition to column.distinct()<a class="changeset-link headerlink reference internal" href="#change-d5193859e2955a59dd9b9689c9c46766">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/558">#558</a></p>
</p>
</li>
<li><p id="change-0.3.9-28"><span class="target" id="change-22737e38569c4710d50bad784dc3c2f6"><strong>[sql] </strong></span>result.last_inserted_ids() should return a list that is identically
sized to the primary key constraint of the table.  values that were
&#8220;passively&#8221; created and not available via cursor.lastrowid will be None.<a class="changeset-link headerlink reference internal" href="#change-22737e38569c4710d50bad784dc3c2f6">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-29"><span class="target" id="change-133fed2970fe02b19469b87df37569d2"><strong>[sql] </strong></span>long-identifier detection fixed to use &gt; rather than &gt;= for
max ident length<a class="changeset-link headerlink reference internal" href="#change-133fed2970fe02b19469b87df37569d2">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/589">#589</a></p>
</p>
</li>
<li><p id="change-0.3.9-30"><span class="target" id="change-4b796f178bce68c33756958792addb5e"><strong>[sql] </strong></span>fixed bug where selectable.corresponding_column(selectable.c.col)
would not return selectable.c.col, if the selectable is a join
of a table and another join involving the same table.  messed
up ORM decision making<a class="changeset-link headerlink reference internal" href="#change-4b796f178bce68c33756958792addb5e">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/593">#593</a></p>
</p>
</li>
<li><p id="change-0.3.9-31"><span class="target" id="change-01be6714d969a9a05321795a1a05462e"><strong>[sql] </strong></span>added Interval type to types.py<a class="changeset-link headerlink reference internal" href="#change-01be6714d969a9a05321795a1a05462e">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/595">#595</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.9-mysql">
<h3>mysql<a class="headerlink" href="#change-0.3.9-mysql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-32"><span class="target" id="change-a2ea4c40b80240eda48ac840435d5023"><strong>[mysql] </strong></span>fixed catching of some errors that imply a dropped connection<a class="changeset-link headerlink reference internal" href="#change-a2ea4c40b80240eda48ac840435d5023">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/625">#625</a></p>
</p>
</li>
<li><p id="change-0.3.9-33"><span class="target" id="change-d2c713d82a5cc3352589d3b97a4f1a75"><strong>[mysql] </strong></span>fixed escaping of the modulo operator<a class="changeset-link headerlink reference internal" href="#change-d2c713d82a5cc3352589d3b97a4f1a75">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/624">#624</a></p>
</p>
</li>
<li><p id="change-0.3.9-34"><span class="target" id="change-ccc1148a1c82ef495cc71ca9962442b9"><strong>[mysql] </strong></span>added &#8216;fields&#8217; to reserved words<a class="changeset-link headerlink reference internal" href="#change-ccc1148a1c82ef495cc71ca9962442b9">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/590">#590</a></p>
</p>
</li>
<li><p id="change-0.3.9-35"><span class="target" id="change-706aff419d104524d8aee408e01fca4b"><strong>[mysql] </strong></span>various reflection enhancement/fixes<a class="changeset-link headerlink reference internal" href="#change-706aff419d104524d8aee408e01fca4b">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.9-sqlite">
<h3>sqlite<a class="headerlink" href="#change-0.3.9-sqlite" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-36"><span class="target" id="change-cda34421fe7120853f316f8e8cfbc11b"><strong>[sqlite] </strong></span>rearranged dialect initialization so it has time to warn about pysqlite1
being too old.<a class="changeset-link headerlink reference internal" href="#change-cda34421fe7120853f316f8e8cfbc11b">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-37"><span class="target" id="change-123da4b941ba10797888a9215510d452"><strong>[sqlite] </strong></span>sqlite better handles datetime/date/time objects mixed and matched
with various Date/Time/DateTime columns<a class="changeset-link headerlink reference internal" href="#change-123da4b941ba10797888a9215510d452">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-38"><span class="target" id="change-ecc1a278352da6fe50070d9f2df39fc6"><strong>[sqlite] </strong></span>string PK column inserts don&#8217;t get overwritten with OID<a class="changeset-link headerlink reference internal" href="#change-ecc1a278352da6fe50070d9f2df39fc6">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/603">#603</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.9-mssql">
<h3>mssql<a class="headerlink" href="#change-0.3.9-mssql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-39"><span class="target" id="change-2bfbe63bd44f73945555c6ffb24c094e"><strong>[mssql] </strong></span>fix port option handling for pyodbc<a class="changeset-link headerlink reference internal" href="#change-2bfbe63bd44f73945555c6ffb24c094e">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/634">#634</a></p>
</p>
</li>
<li><p id="change-0.3.9-40"><span class="target" id="change-1e148d4d69c64d022729a0015335e1e8"><strong>[mssql] </strong></span>now able to reflect start and increment values for identity columns<a class="changeset-link headerlink reference internal" href="#change-1e148d4d69c64d022729a0015335e1e8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-41"><span class="target" id="change-439f3b4aba1eb4036d66b94a0f22614d"><strong>[mssql] </strong></span>preliminary support for using scope_identity() with pyodbc<a class="changeset-link headerlink reference internal" href="#change-439f3b4aba1eb4036d66b94a0f22614d">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.9-oracle">
<h3>oracle<a class="headerlink" href="#change-0.3.9-oracle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-42"><span class="target" id="change-7c280ed8cae1ff8178c595a4ad188950"><strong>[oracle] </strong></span>datetime fixes: got subsecond TIMESTAMP to work,
added OracleDate which supports types.Date with only year/month/day<a class="changeset-link headerlink reference internal" href="#change-7c280ed8cae1ff8178c595a4ad188950">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/604">#604</a></p>
</p>
</li>
<li><p id="change-0.3.9-43"><span class="target" id="change-fe2a41d1863a635eb6874cd35fb20b48"><strong>[oracle] </strong></span>added dialect flag &#8220;auto_convert_lobs&#8221;, defaults to True; will cause any
LOB objects detected in a result set to be forced into OracleBinary
so that the LOB is read() automatically, if no typemap was present
(i.e., if a textual execute() was issued).<a class="changeset-link headerlink reference internal" href="#change-fe2a41d1863a635eb6874cd35fb20b48">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-44"><span class="target" id="change-1785061d703c74bd4913416cc528e437"><strong>[oracle] </strong></span>mod operator &#8216;%&#8217; produces MOD<a class="changeset-link headerlink reference internal" href="#change-1785061d703c74bd4913416cc528e437">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/624">#624</a></p>
</p>
</li>
<li><p id="change-0.3.9-45"><span class="target" id="change-ae5989d376a6e417a66cf93a4214f7d1"><strong>[oracle] </strong></span>converts cx_oracle datetime objects to Python datetime.datetime when
Python 2.3 used<a class="changeset-link headerlink reference internal" href="#change-ae5989d376a6e417a66cf93a4214f7d1">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/542">#542</a></p>
</p>
</li>
<li><p id="change-0.3.9-46"><span class="target" id="change-2cdcc2d95fcff22d45cbf69a4828bb78"><strong>[oracle] </strong></span>fixed unicode conversion in Oracle TEXT type<a class="changeset-link headerlink reference internal" href="#change-2cdcc2d95fcff22d45cbf69a4828bb78">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.9-misc">
<h3>misc<a class="headerlink" href="#change-0.3.9-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.9-47"><span class="target" id="change-eb702c9d953f71913b8f13239bd1ace3"><strong>[ext] </strong></span>iteration over dict association proxies is now dict-like, not
InstrumentedList-like (e.g. over keys instead of values)<a class="changeset-link headerlink reference internal" href="#change-eb702c9d953f71913b8f13239bd1ace3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-48"><span class="target" id="change-00e6c94fbb4056e8fd8396d98317361e"><strong>[ext] </strong></span>association proxies no longer bind tightly to source collections, and are constructed with a thunk instead<a class="changeset-link headerlink reference internal" href="#change-00e6c94fbb4056e8fd8396d98317361e">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/597">#597</a></p>
</p>
</li>
<li><p id="change-0.3.9-49"><span class="target" id="change-2e4b108cd893d88498c7604cffd62078"><strong>[ext] </strong></span>added selectone_by() to assignmapper<a class="changeset-link headerlink reference internal" href="#change-2e4b108cd893d88498c7604cffd62078">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-50"><span class="target" id="change-d2c713d82a5cc3352589d3b97a4f1a75"><strong>[postgres] </strong></span>fixed escaping of the modulo operator<a class="changeset-link headerlink reference internal" href="#change-d2c713d82a5cc3352589d3b97a4f1a75">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/624">#624</a></p>
</p>
</li>
<li><p id="change-0.3.9-51"><span class="target" id="change-64c391579ec741ebb893bf0eda8954dd"><strong>[postgres] </strong></span>added support for reflection of domains<a class="changeset-link headerlink reference internal" href="#change-64c391579ec741ebb893bf0eda8954dd">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/570">#570</a></p>
</p>
</li>
<li><p id="change-0.3.9-52"><span class="target" id="change-7155ff564edfbf3f017269ef87e325b1"><strong>[postgres] </strong></span>types which are missing during reflection resolve to Null type
instead of raising an error<a class="changeset-link headerlink reference internal" href="#change-7155ff564edfbf3f017269ef87e325b1">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.9-53"><span class="target" id="change-059d6872923fb7b2dd4dbe3e1b480fa1"><strong>[postgres] </strong></span>the fix in &#8220;schema&#8221; above fixes reflection of foreign keys from an
alt-schema table to a public schema table<a class="changeset-link headerlink reference internal" href="#change-059d6872923fb7b2dd4dbe3e1b480fa1">¶</a><p></p>
</p>
</li>
</ul>
</div>
</div>
<div class="section" id="change-0.3.8">
<h2>0.3.8<a class="headerlink" href="#change-0.3.8" title="Permalink to this headline">¶</a></h2>
Released: Sat Jun 02 2007<div class="section" id="change-0.3.8-orm">
<h3>orm<a class="headerlink" href="#change-0.3.8-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.8-0"><span class="target" id="change-220bb837574d279c29a38a113e5fe6cc"><strong>[orm] </strong></span>added reset_joinpoint() method to Query, moves the &#8220;join point&#8221;
back to the starting mapper. 0.4 will change the behavior of
join() to reset the &#8220;join point&#8221; in all cases so this is an
interim method. for forwards compatibility, ensure joins across
multiple relations are specified using a single join(), i.e.
join([&#8216;a&#8217;, &#8216;b&#8217;, &#8216;c&#8217;]).<a class="changeset-link headerlink reference internal" href="#change-220bb837574d279c29a38a113e5fe6cc">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-1"><span class="target" id="change-83691e3c49fa12bf686a08d0a5af2c40"><strong>[orm] </strong></span>fixed bug in query.instances() that wouldn&#8217;t handle more than
on additional mapper or one additional column.<a class="changeset-link headerlink reference internal" href="#change-83691e3c49fa12bf686a08d0a5af2c40">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-2"><span class="target" id="change-0a134f37a0801fcebac51e263334c46e"><strong>[orm] </strong></span>&#8220;delete-orphan&#8221; no longer implies &#8220;delete&#8221;. ongoing effort to
separate the behavior of these two operations.<a class="changeset-link headerlink reference internal" href="#change-0a134f37a0801fcebac51e263334c46e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-3"><span class="target" id="change-a7c0ffc4d0d71da2376e9be63199b048"><strong>[orm] </strong></span>many-to-many relationships properly set the type of bind params
for delete operations on the association table<a class="changeset-link headerlink reference internal" href="#change-a7c0ffc4d0d71da2376e9be63199b048">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-4"><span class="target" id="change-cb313a2a343c37587dcb6a44a61e9cd5"><strong>[orm] </strong></span>many-to-many relationships check that the number of rows deleted
from the association table by a delete operation matches the
expected results<a class="changeset-link headerlink reference internal" href="#change-cb313a2a343c37587dcb6a44a61e9cd5">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-5"><span class="target" id="change-903aed08735804f496b188549879ab4f"><strong>[orm] </strong></span>session.get() and session.load() propagate **kwargs through to
query<a class="changeset-link headerlink reference internal" href="#change-903aed08735804f496b188549879ab4f">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-6"><span class="target" id="change-4900a187a33ec9e4b25fecb93f373349"><strong>[orm] </strong></span>fix to polymorphic query which allows the original
polymorphic_union to be embedded into a correlated subquery<a class="changeset-link headerlink reference internal" href="#change-4900a187a33ec9e4b25fecb93f373349">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/577">#577</a></p>
</p>
</li>
<li><p id="change-0.3.8-7"><span class="target" id="change-8a65a9ccd3b899be79463c57097742a8"><strong>[orm] </strong></span>fix to select_by(&lt;propname&gt;=&lt;object instance&gt;) -style joins in
conjunction with many-to-many relationships, bug introduced in
r2556<a class="changeset-link headerlink reference internal" href="#change-8a65a9ccd3b899be79463c57097742a8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-8"><span class="target" id="change-364da54ef89796ce592a65df9986c2de"><strong>[orm] </strong></span>the &#8220;primary_key&#8221; argument to mapper() is propagated to the
&#8220;polymorphic&#8221; mapper. primary key columns in this list get
normalized to that of the mapper&#8217;s local table.<a class="changeset-link headerlink reference internal" href="#change-364da54ef89796ce592a65df9986c2de">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-9"><span class="target" id="change-49c52ba1ca54032ac76f17ea1ac98f39"><strong>[orm] </strong></span>restored logging of &#8220;lazy loading clause&#8221; under
sa.orm.strategies logger, got removed in 0.3.7<a class="changeset-link headerlink reference internal" href="#change-49c52ba1ca54032ac76f17ea1ac98f39">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-10"><span class="target" id="change-c4c11ecc4b62a615e38a3a2aa51ea362"><strong>[orm] </strong></span>improved support for eagerloading of properties off of mappers
that are mapped to select() statements; i.e. eagerloader is
better at locating the correct selectable with which to attach
its LEFT OUTER JOIN.<a class="changeset-link headerlink reference internal" href="#change-c4c11ecc4b62a615e38a3a2aa51ea362">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.8-sql">
<h3>sql<a class="headerlink" href="#change-0.3.8-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.8-11"><span class="target" id="change-b633ad04bf23c91721ac0943b6db5eca"><strong>[sql] </strong></span>_Label class overrides compare_self to return its ultimate
object. meaning, if you say someexpr.label(&#8216;foo&#8217;) == 5, it
produces the correct &#8220;someexpr == 5&#8221;.<a class="changeset-link headerlink reference internal" href="#change-b633ad04bf23c91721ac0943b6db5eca">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-12"><span class="target" id="change-2f98e49a9c61f9fdc7c291653364afe9"><strong>[sql] </strong></span>_Label propagates &#8220;_hide_froms()&#8221; so that scalar selects
behave more properly with regards to FROM clause #574<a class="changeset-link headerlink reference internal" href="#change-2f98e49a9c61f9fdc7c291653364afe9">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-13"><span class="target" id="change-e7872b2b2a3bbd38c13e8950a8e540bf"><strong>[sql] </strong></span>fix to long name generation when using oid_column as an order by
(oids used heavily in mapper queries)<a class="changeset-link headerlink reference internal" href="#change-e7872b2b2a3bbd38c13e8950a8e540bf">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-14"><span class="target" id="change-936ba4bd4f829a2f737cd53def3e14fc"><strong>[sql] </strong></span>significant speed improvement to ResultProxy, pre-caches
TypeEngine dialect implementations and saves on function calls
per column<a class="changeset-link headerlink reference internal" href="#change-936ba4bd4f829a2f737cd53def3e14fc">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-15"><span class="target" id="change-fc92e69994fc285cf4e0fd2f1f78cec5"><strong>[sql] </strong></span>parenthesis are applied to clauses via a new _Grouping
construct. uses operator precedence to more intelligently apply
parenthesis to clauses, provides cleaner nesting of clauses
(doesn&#8217;t mutate clauses placed in other clauses, i.e. no &#8216;parens&#8217;
flag)<a class="changeset-link headerlink reference internal" href="#change-fc92e69994fc285cf4e0fd2f1f78cec5">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-16"><span class="target" id="change-bb4e8c5c4e8e15649157fd777ceefdc2"><strong>[sql] </strong></span>added &#8216;modifier&#8217; keyword, works like func.&lt;foo&gt; except does not
add parenthesis.  e.g. select([modifier.DISTINCT(...)]) etc.<a class="changeset-link headerlink reference internal" href="#change-bb4e8c5c4e8e15649157fd777ceefdc2">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-17"><span class="target" id="change-6c51873f355f528caf99b2451980c036"><strong>[sql] </strong></span>removed &#8220;no group by&#8217;s in a select that&#8217;s part of a UNION&#8221;
restriction<a class="changeset-link headerlink reference internal" href="#change-6c51873f355f528caf99b2451980c036">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/578">#578</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.8-mysql">
<h3>mysql<a class="headerlink" href="#change-0.3.8-mysql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.8-18"><span class="target" id="change-9641b6abc326362d6deac112eace4afb"><strong>[mysql] </strong></span>Nearly all MySQL column types are now supported for declaration
and reflection. Added NCHAR, NVARCHAR, VARBINARY, TINYBLOB,
LONGBLOB, YEAR<a class="changeset-link headerlink reference internal" href="#change-9641b6abc326362d6deac112eace4afb">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-19"><span class="target" id="change-18085e3f56d8b900bc96c38dd5a26b45"><strong>[mysql] </strong></span>The sqltypes.Binary passthrough now always builds a BLOB,
avoiding problems with very old database versions<a class="changeset-link headerlink reference internal" href="#change-18085e3f56d8b900bc96c38dd5a26b45">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-20"><span class="target" id="change-9724aa42d8520597d817509db4f12ea8"><strong>[mysql] </strong></span>support for column-level CHARACTER SET and COLLATE declarations,
as well as ASCII, UNICODE, NATIONAL and BINARY shorthand.<a class="changeset-link headerlink reference internal" href="#change-9724aa42d8520597d817509db4f12ea8">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.8-firebird">
<h3>firebird<a class="headerlink" href="#change-0.3.8-firebird" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.8-21"><span class="target" id="change-0a0b981a70a945c67ba5720e526c1f3c"><strong>[firebird] </strong></span>set max identifier length to 31<a class="changeset-link headerlink reference internal" href="#change-0a0b981a70a945c67ba5720e526c1f3c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-22"><span class="target" id="change-ee8ef044cfb4e438086a05caa7914ae7"><strong>[firebird] </strong></span>supports_sane_rowcount() set to False due to ticket #370.
versioned_id_col feature wont work in FB.<a class="changeset-link headerlink reference internal" href="#change-ee8ef044cfb4e438086a05caa7914ae7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-23"><span class="target" id="change-4caef4c969ab8a7577cc51fc60890d5e"><strong>[firebird] </strong></span>some execution fixes<a class="changeset-link headerlink reference internal" href="#change-4caef4c969ab8a7577cc51fc60890d5e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-24"><span class="target" id="change-794981a4b2ff6f2c7dd837ecebbc73c5"><strong>[firebird] </strong></span>new association proxy implementation, implementing complete
proxies to list, dict and set-based relation collections<a class="changeset-link headerlink reference internal" href="#change-794981a4b2ff6f2c7dd837ecebbc73c5">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-25"><span class="target" id="change-63cb2d366f99e745287c162781638285"><strong>[firebird] </strong></span>added orderinglist, a custom list class that synchronizes an
object attribute with that object&#8217;s position in the list<a class="changeset-link headerlink reference internal" href="#change-63cb2d366f99e745287c162781638285">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-26"><span class="target" id="change-26aa9970c7ff168af29ed9bc9c0eed85"><strong>[firebird] </strong></span>small fix to SelectResultsExt to not bypass itself during
select().<a class="changeset-link headerlink reference internal" href="#change-26aa9970c7ff168af29ed9bc9c0eed85">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-27"><span class="target" id="change-59a547b4472cbf0c7ab99ad2df75dfd1"><strong>[firebird] </strong></span>added filter(), filter_by() to assignmapper<a class="changeset-link headerlink reference internal" href="#change-59a547b4472cbf0c7ab99ad2df75dfd1">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.8-misc">
<h3>misc<a class="headerlink" href="#change-0.3.8-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.8-28"><span class="target" id="change-dac5031c19faee84b91961d912ecba94"><strong>[engines] </strong></span>added detach() to Connection, allows underlying DBAPI connection
to be detached from its pool, closing on dereference/close()
instead of being reused by the pool.<a class="changeset-link headerlink reference internal" href="#change-dac5031c19faee84b91961d912ecba94">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.8-29"><span class="target" id="change-4f0f262d9c14896c7b7e1477cfee8d6e"><strong>[engines] </strong></span>added invalidate() to Connection, immediately invalidates the
Connection and its underlying DBAPI connection.<a class="changeset-link headerlink reference internal" href="#change-4f0f262d9c14896c7b7e1477cfee8d6e">¶</a><p></p>
</p>
</li>
</ul>
</div>
</div>
<div class="section" id="change-0.3.7">
<h2>0.3.7<a class="headerlink" href="#change-0.3.7" title="Permalink to this headline">¶</a></h2>
Released: Sun Apr 29 2007<div class="section" id="change-0.3.7-orm">
<h3>orm<a class="headerlink" href="#change-0.3.7-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.7-0"><span class="target" id="change-b70a16716f8cf919b358494b261c6e83"><strong>[orm] </strong></span>fixed critical issue when, after options(eagerload()) is used,
the mapper would then always apply query &#8220;wrapping&#8221; behavior
for all subsequent LIMIT/OFFSET/DISTINCT queries, even if no
eager loading was applied on those subsequent queries.<a class="changeset-link headerlink reference internal" href="#change-b70a16716f8cf919b358494b261c6e83">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-1"><span class="target" id="change-7861d96f724ca34ac55a3d701575ffac"><strong>[orm] </strong></span>added query.with_parent(someinstance) method.  searches for
target instance using lazy join criterion from parent instance.
takes optional string &#8220;property&#8221; to isolate the desired relation.
also adds static Query.query_from_parent(instance, property)
version.<a class="changeset-link headerlink reference internal" href="#change-7861d96f724ca34ac55a3d701575ffac">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/541">#541</a></p>
</p>
</li>
<li><p id="change-0.3.7-2"><span class="target" id="change-3a8b0fc4795043a6b42596d769387cb9"><strong>[orm] </strong></span>improved query.XXX_by(someprop=someinstance) querying to use
similar methodology to with_parent, i.e. using the &#8220;lazy&#8221; clause
which prevents adding the remote instance&#8217;s table to the SQL,
thereby making more complex conditions possible<a class="changeset-link headerlink reference internal" href="#change-3a8b0fc4795043a6b42596d769387cb9">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/554">#554</a></p>
</p>
</li>
<li><p id="change-0.3.7-3"><span class="target" id="change-0a56acf715d490dcc5adea669d5277ac"><strong>[orm] </strong></span>added generative versions of aggregates, i.e. sum(), avg(), etc.
to query. used via query.apply_max(), apply_sum(), etc.
#552<a class="changeset-link headerlink reference internal" href="#change-0a56acf715d490dcc5adea669d5277ac">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-4"><span class="target" id="change-007141aca01632f5db21be3524e7e4b1"><strong>[orm] </strong></span>fix to using distinct() or distinct=True in combination with
join() and similar<a class="changeset-link headerlink reference internal" href="#change-007141aca01632f5db21be3524e7e4b1">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-5"><span class="target" id="change-cc8527d248fb3499b4a18f6718a08f7c"><strong>[orm] </strong></span>corresponding to label/bindparam name generation, eager loaders
generate deterministic names for the aliases they create using
md5 hashes.<a class="changeset-link headerlink reference internal" href="#change-cc8527d248fb3499b4a18f6718a08f7c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-6"><span class="target" id="change-5519681da8ec6c0511745ace0e07a5e5"><strong>[orm] </strong></span>improved/fixed custom collection classes when giving it &#8220;set&#8221;/
&#8220;sets.Set&#8221; classes or subclasses (was still looking for append()
methods on them during lazy loads)<a class="changeset-link headerlink reference internal" href="#change-5519681da8ec6c0511745ace0e07a5e5">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-7"><span class="target" id="change-2352eeb7d6a38352d971f1ff1053808f"><strong>[orm] </strong></span>restored old &#8220;column_property()&#8221; ORM function (used to be called
&#8220;column()&#8221;) to force any column expression to be added as a property
on a mapper, particularly those that aren&#8217;t present in the mapped
selectable.  this allows &#8220;scalar expressions&#8221; of any kind to be
added as relations (though they have issues with eager loads).<a class="changeset-link headerlink reference internal" href="#change-2352eeb7d6a38352d971f1ff1053808f">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-8"><span class="target" id="change-af6355eefc1aad1a89924b3f68f75920"><strong>[orm] </strong></span>fix to many-to-many relationships targeting polymorphic mappers<a class="changeset-link headerlink reference internal" href="#change-af6355eefc1aad1a89924b3f68f75920">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/533">#533</a></p>
</p>
</li>
<li><p id="change-0.3.7-9"><span class="target" id="change-9f1f52abb6da3c56fff913386ceb7882"><strong>[orm] </strong></span>making progress with session.merge() as well as combining its
usage with entity_name<a class="changeset-link headerlink reference internal" href="#change-9f1f52abb6da3c56fff913386ceb7882">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/543">#543</a></p>
</p>
</li>
<li><p id="change-0.3.7-10"><span class="target" id="change-065b2f4a27d4207c1c01b7aaade4db8a"><strong>[orm] </strong></span>the usual adjustments to relationships between inheriting mappers,
in this case establishing relation()s to subclass mappers where
the join conditions come from the superclass&#8217; table<a class="changeset-link headerlink reference internal" href="#change-065b2f4a27d4207c1c01b7aaade4db8a">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.7-sql">
<h3>sql<a class="headerlink" href="#change-0.3.7-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.7-11"><span class="target" id="change-73d7e6b1e7916be07e30cac965961ce9"><strong>[sql] </strong></span>keys() of result set columns are not lowercased, come back
exactly as they&#8217;re expressed in cursor.description.  note this
causes colnames to be all caps in oracle.<a class="changeset-link headerlink reference internal" href="#change-73d7e6b1e7916be07e30cac965961ce9">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-12"><span class="target" id="change-c37360d8b51c05ae857e5b9716bddbcb"><strong>[sql] </strong></span>preliminary support for unicode table names, column names and
SQL statements added, for databases which can support them.
Works with sqlite and postgres so far.  Mysql <em>mostly</em> works
except the has_table() function does not work.  Reflection
works too.<a class="changeset-link headerlink reference internal" href="#change-c37360d8b51c05ae857e5b9716bddbcb">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-13"><span class="target" id="change-fffe5705a0f33aa08fa8f28f1ec39a83"><strong>[sql] </strong></span>the Unicode type is now a direct subclass of String, which now
contains all the &#8220;convert_unicode&#8221; logic.  This helps the variety
of unicode situations that occur in db&#8217;s such as MS-SQL to be
better handled and allows subclassing of the Unicode datatype.<a class="changeset-link headerlink reference internal" href="#change-fffe5705a0f33aa08fa8f28f1ec39a83">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/522">#522</a></p>
</p>
</li>
<li><p id="change-0.3.7-14"><span class="target" id="change-801d06dffa1b17f7712f296ca71f5a79"><strong>[sql] </strong></span>ClauseElements can be used in in_() clauses now, such as bind
parameters, etc. #476<a class="changeset-link headerlink reference internal" href="#change-801d06dffa1b17f7712f296ca71f5a79">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-15"><span class="target" id="change-2fdb206fa85f07e5f47bba08e0c06013"><strong>[sql] </strong></span>reverse operators implemented for <cite>CompareMixin</cite> elements,
allows expressions like &#8220;5 + somecolumn&#8221; etc. #474<a class="changeset-link headerlink reference internal" href="#change-2fdb206fa85f07e5f47bba08e0c06013">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-16"><span class="target" id="change-ff895df76dd194eb810e5ca68bd903dd"><strong>[sql] </strong></span>the &#8220;where&#8221; criterion of an update() and delete() now correlates
embedded select() statements against the table being updated or
deleted.  this works the same as nested select() statement
correlation, and can be disabled via the correlate=False flag on
the embedded select().<a class="changeset-link headerlink reference internal" href="#change-ff895df76dd194eb810e5ca68bd903dd">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-17"><span class="target" id="change-88d7569964a508ab2262f1926b13c92d"><strong>[sql] </strong></span>column labels are now generated in the compilation phase, which
means their lengths are dialect-dependent.  So on oracle a label
that gets truncated to 30 chars will go out to 63 characters
on postgres.  Also, the true labelname is always attached as the
accessor on the parent Selectable so there&#8217;s no need to be aware
of the &#8220;truncated&#8221; label names.<a class="changeset-link headerlink reference internal" href="#change-88d7569964a508ab2262f1926b13c92d">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/512">#512</a></p>
</p>
</li>
<li><p id="change-0.3.7-18"><span class="target" id="change-3a29e9cb61a8969eac7d12324eb44f91"><strong>[sql] </strong></span>column label and bind param &#8220;truncation&#8221; also generate
deterministic names now, based on their ordering within the
full statement being compiled.  this means the same statement
will produce the same string across application restarts and
allowing DB query plan caching to work better.<a class="changeset-link headerlink reference internal" href="#change-3a29e9cb61a8969eac7d12324eb44f91">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-19"><span class="target" id="change-07643dfce558c48c88fcd3c0dbbc207c"><strong>[sql] </strong></span>the &#8220;mini&#8221; column labels generated when using subqueries, which
are to work around glitchy SQLite behavior that doesn&#8217;t understand
&#8220;foo.id&#8221; as equivalent to &#8220;id&#8221;, are now only generated in the case
that those named columns are selected from (part of)<a class="changeset-link headerlink reference internal" href="#change-07643dfce558c48c88fcd3c0dbbc207c">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/513">#513</a></p>
</p>
</li>
<li><p id="change-0.3.7-20"><span class="target" id="change-6db4c8aa79f09bcab6c7161873c65f93"><strong>[sql] </strong></span>the label() method on ColumnElement will properly propagate the
TypeEngine of the base element out to the label, including a label()
created from a scalar=True select() statement.<a class="changeset-link headerlink reference internal" href="#change-6db4c8aa79f09bcab6c7161873c65f93">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-21"><span class="target" id="change-c987bd1aeea789b13f68c82c9c4a4ff7"><strong>[sql] </strong></span>MS-SQL better detects when a query is a subquery and knows not to
generate ORDER BY phrases for those<a class="changeset-link headerlink reference internal" href="#change-c987bd1aeea789b13f68c82c9c4a4ff7">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/513">#513</a></p>
</p>
</li>
<li><p id="change-0.3.7-22"><span class="target" id="change-6f431b2f1da5df6d8744478e753a48e3"><strong>[sql] </strong></span>fix for fetchmany() &#8220;size&#8221; argument being positional in most
dbapis<a class="changeset-link headerlink reference internal" href="#change-6f431b2f1da5df6d8744478e753a48e3">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/505">#505</a></p>
</p>
</li>
<li><p id="change-0.3.7-23"><span class="target" id="change-62f64e15e5caee27d5fdb304138a3d64"><strong>[sql] </strong></span>sending None as an argument to func.&lt;something&gt; will produce
an argument of NULL<a class="changeset-link headerlink reference internal" href="#change-62f64e15e5caee27d5fdb304138a3d64">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-24"><span class="target" id="change-8406340520cd47aabf06707f06d707e7"><strong>[sql] </strong></span>query strings in unicode URLs get keys encoded to ascii
for **kwargs compat<a class="changeset-link headerlink reference internal" href="#change-8406340520cd47aabf06707f06d707e7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-25"><span class="target" id="change-d6bccf2e2942ba9e7fc42b6359f5e1c5"><strong>[sql] </strong></span>slight tweak to raw execute() change to also support tuples
for positional parameters, not just lists<a class="changeset-link headerlink reference internal" href="#change-d6bccf2e2942ba9e7fc42b6359f5e1c5">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/523">#523</a></p>
</p>
</li>
<li><p id="change-0.3.7-26"><span class="target" id="change-e896659511f05a46c43f0bbb4a6ce393"><strong>[sql] </strong></span>fix to case() construct to propagate the type of the first
WHEN condition as the return type of the case statement<a class="changeset-link headerlink reference internal" href="#change-e896659511f05a46c43f0bbb4a6ce393">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.7-mysql">
<h3>mysql<a class="headerlink" href="#change-0.3.7-mysql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.7-27"><span class="target" id="change-ea9d36d40ea288b0955dc117004baab9"><strong>[mysql] </strong></span>support for SSL arguments given as inline within URL query string,
prefixed with &#8220;ssl_&#8221;, courtesy <a class="reference external" href="mailto:terjeros&#37;&#52;&#48;gmail&#46;com">terjeros<span>&#64;</span>gmail<span>&#46;</span>com</a>.<a class="changeset-link headerlink reference internal" href="#change-ea9d36d40ea288b0955dc117004baab9">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-28"><span class="target" id="change-a9940cb8e01661bf109d581f56990859"><strong>[mysql] [&lt;schemaname&gt;] </strong></span>mysql uses &#8220;DESCRIBE.&lt;tablename&gt;&#8221;, catching exceptions
if table doesn&#8217;t exist, in order to determine if a table exists.
this supports unicode table names as well as schema names. tested
with MySQL5 but should work with 4.1 series as well. (#557)<a class="changeset-link headerlink reference internal" href="#change-a9940cb8e01661bf109d581f56990859">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.7-sqlite">
<h3>sqlite<a class="headerlink" href="#change-0.3.7-sqlite" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.7-29"><span class="target" id="change-cf170dcbc751945cb3050b2aba47a7fc"><strong>[sqlite] </strong></span>removed silly behavior where sqlite would reflect UNIQUE indexes
as part of the primary key (?!)<a class="changeset-link headerlink reference internal" href="#change-cf170dcbc751945cb3050b2aba47a7fc">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.7-mssql">
<h3>mssql<a class="headerlink" href="#change-0.3.7-mssql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.7-30"><span class="target" id="change-cd069bfe49e81ecb1723ce2f455629d9"><strong>[mssql] </strong></span>pyodbc is now the preferred DB-API for MSSQL, and if no module is
specifically requested, will be loaded first on a module probe.<a class="changeset-link headerlink reference internal" href="#change-cd069bfe49e81ecb1723ce2f455629d9">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-31"><span class="target" id="change-98f166632883a1f0f0e9b5551435f1e4"><strong>[mssql] </strong></span>The &#64;&#64;SCOPE_IDENTITY is now used instead of &#64;&#64;IDENTITY. This
behavior may be overridden with the engine_connect
&#8220;use_scope_identity&#8221; keyword parameter, which may also be specified
in the dburi.<a class="changeset-link headerlink reference internal" href="#change-98f166632883a1f0f0e9b5551435f1e4">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.7-oracle">
<h3>oracle<a class="headerlink" href="#change-0.3.7-oracle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.7-32"><span class="target" id="change-00f079e3efc304a332a86ad53163494c"><strong>[oracle] </strong></span>small fix to allow successive compiles of the same SELECT object
which features LIMIT/OFFSET.  oracle dialect needs to modify
the object to have ROW_NUMBER OVER and wasn&#8217;t performing
the full series of steps on successive compiles.<a class="changeset-link headerlink reference internal" href="#change-00f079e3efc304a332a86ad53163494c">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.7-misc">
<h3>misc<a class="headerlink" href="#change-0.3.7-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.7-33"><span class="target" id="change-5769c29329bd92d3e0d54145d3c84967"><strong>[engines] </strong></span>warnings module used for issuing warnings (instead of logging)<a class="changeset-link headerlink reference internal" href="#change-5769c29329bd92d3e0d54145d3c84967">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-34"><span class="target" id="change-7d24501b7c507a99a005fca1ced19d34"><strong>[engines] </strong></span>cleanup of DBAPI import strategies across all engines<a class="changeset-link headerlink reference internal" href="#change-7d24501b7c507a99a005fca1ced19d34">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/480">#480</a></p>
</p>
</li>
<li><p id="change-0.3.7-35"><span class="target" id="change-093f6563bc1d6302a6c65091f189c417"><strong>[engines] </strong></span>refactoring of engine internals which reduces complexity,
number of codepaths; places more state inside of ExecutionContext
to allow more dialect control of cursor handling, result sets.
ResultProxy totally refactored and also has two versions of
&#8220;buffered&#8221; result sets used for different purposes.<a class="changeset-link headerlink reference internal" href="#change-093f6563bc1d6302a6c65091f189c417">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-36"><span class="target" id="change-7563427af9a2dbabdc41b671f9119253"><strong>[engines] </strong></span>server side cursor support fully functional in postgres.<a class="changeset-link headerlink reference internal" href="#change-7563427af9a2dbabdc41b671f9119253">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/514">#514</a></p>
</p>
</li>
<li><p id="change-0.3.7-37"><span class="target" id="change-de2734d32f9f75ca5bf6decc1c56eb11"><strong>[engines] </strong></span>improved framework for auto-invalidation of connections that have
lost their underlying database, via dialect-specific detection
of exceptions corresponding to that database&#8217;s disconnect
related error messages.  Additionally, when a &#8220;connection no
longer open&#8221; condition is detected, the entire connection pool
is discarded and replaced with a new instance.  #516<a class="changeset-link headerlink reference internal" href="#change-de2734d32f9f75ca5bf6decc1c56eb11">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-38"><span class="target" id="change-f7455a9f34d7db0039194c7cdeef8441"><strong>[engines] </strong></span>the dialects within sqlalchemy.databases become a setuptools
entry points. loading the built-in database dialects works the
same as always, but if none found will fall back to trying
pkg_resources to load an external module<a class="changeset-link headerlink reference internal" href="#change-f7455a9f34d7db0039194c7cdeef8441">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/521">#521</a></p>
</p>
</li>
<li><p id="change-0.3.7-39"><span class="target" id="change-b231bc2f156428e9dc2d3013d285ace8"><strong>[engines] </strong></span>Engine contains a &#8220;url&#8221; attribute referencing the url.URL object
used by create_engine().<a class="changeset-link headerlink reference internal" href="#change-b231bc2f156428e9dc2d3013d285ace8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-40"><span class="target" id="change-ad45e2908330aaa751332d0c9d866f98"><strong>[informix] </strong></span>informix support added !  courtesy James Zhang, who put a ton
of effort in.<a class="changeset-link headerlink reference internal" href="#change-ad45e2908330aaa751332d0c9d866f98">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-41"><span class="target" id="change-a5ce4383d5826666ad4659e0d0d1b1f0"><strong>[extensions] </strong></span>big fix to AssociationProxy so that multiple AssociationProxy
objects can be associated with a single association collection.<a class="changeset-link headerlink reference internal" href="#change-a5ce4383d5826666ad4659e0d0d1b1f0">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.7-42"><span class="target" id="change-7d3dab36a8f8dd803d9be9c4c038dd9e"><strong>[extensions] </strong></span>assign_mapper names methods according to their keys (i.e. __name__)
#551<a class="changeset-link headerlink reference internal" href="#change-7d3dab36a8f8dd803d9be9c4c038dd9e">¶</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">¶</a></h2>
Released: Fri Mar 23 2007<div class="section" id="change-0.3.6-orm">
<h3>orm<a class="headerlink" href="#change-0.3.6-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.6-0"><span class="target" id="change-7ab6dfcb95c397cb1aaadd385c779659"><strong>[orm] </strong></span>the full featureset of the SelectResults extension has been merged
into a new set of methods available off of Query.  These methods
all provide &#8220;generative&#8221; behavior, whereby the Query is copied
and a new one returned with additional criterion added.
The new methods include:<blockquote>
<div><ul>
<li>filter() - applies select criterion to the query</li>
<li>filter_by() - applies &#8220;by&#8221;-style criterion to the query</li>
<li>avg() - return the avg() function on the given column</li>
<li>join() - join to a property (or across a list of properties)</li>
<li>outerjoin() - like join() but uses LEFT OUTER JOIN</li>
<li>limit()/offset() - apply LIMIT/OFFSET range-based access
which applies limit/offset: session.query(Foo)[3:5]</li>
<li>distinct() - apply DISTINCT</li>
<li>list() - evaluate the criterion and return results</li>
</ul>
</div></blockquote>
<p>no incompatible changes have been made to Query&#8217;s API and no methods
have been deprecated.  Existing methods like select(), select_by(),
get(), get_by() all execute the query at once and return results
like they always did.  join_to()/join_via() are still there although
the generative join()/outerjoin() methods are easier to use.</p>
<a class="changeset-link headerlink reference internal" href="#change-7ab6dfcb95c397cb1aaadd385c779659">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-1"><span class="target" id="change-346e841422c49f67aa893590d3f7a8e9"><strong>[orm] </strong></span>the return value for multiple mappers used with instances() now
returns a cartesian product of the requested list of mappers,
represented as a list of tuples. this corresponds to the documented
behavior. So that instances match up properly, the &#8220;uniquing&#8221; is
disabled when this feature is used.<a class="changeset-link headerlink reference internal" href="#change-346e841422c49f67aa893590d3f7a8e9">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-2"><span class="target" id="change-2795377646e93c3cb6cd134003d5dbe1"><strong>[orm] </strong></span>Query has add_entity() and add_column() generative methods. these
will add the given mapper/class or ColumnElement to the query at
compile time, and apply them to the instances() method. the user is
responsible for constructing reasonable join conditions (otherwise
you can get full cartesian products). result set is the list of
tuples, non-uniqued.<a class="changeset-link headerlink reference internal" href="#change-2795377646e93c3cb6cd134003d5dbe1">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-3"><span class="target" id="change-9d692f0426fa9d69b169b9e1078dae86"><strong>[orm] </strong></span>strings and columns can also be sent to the *args of instances()
where those exact result columns will be part of the result tuples.<a class="changeset-link headerlink reference internal" href="#change-9d692f0426fa9d69b169b9e1078dae86">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-4"><span class="target" id="change-1dc867b13e1759c636e371363f6ce297"><strong>[orm] </strong></span>a full select() construct can be passed to query.select() (which
worked anyway), but also query.selectfirst(), query.selectone()
which will be used as is (i.e. no query is compiled). works
similarly to sending the results to instances().<a class="changeset-link headerlink reference internal" href="#change-1dc867b13e1759c636e371363f6ce297">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-5"><span class="target" id="change-074438c0a67e60bc48e5420c5f490210"><strong>[orm] </strong></span>eager loading will not &#8220;aliasize&#8221; &#8220;order by&#8221; clauses that were
placed in the select statement by something other than the eager
loader itself, to fix possibility of dupe columns as illustrated in. however, this means you have to be more careful with
the columns placed in the &#8220;order by&#8221; of Query.select(), that you
have explicitly named them in your criterion (i.e. you cant rely on
the eager loader adding them in for you)<a class="changeset-link headerlink reference internal" href="#change-074438c0a67e60bc48e5420c5f490210">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/495">#495</a></p>
</p>
</li>
<li><p id="change-0.3.6-6"><span class="target" id="change-8b4f380caf9d0a368e04cc060655abf0"><strong>[orm] </strong></span>added a handy multi-use &#8220;identity_key()&#8221; method to Session, allowing
the generation of identity keys for primary key values, instances,
and rows, courtesy Daniel Miller<a class="changeset-link headerlink reference internal" href="#change-8b4f380caf9d0a368e04cc060655abf0">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-7"><span class="target" id="change-87bb32d802de386360e5e46f791cdc52"><strong>[orm] </strong></span>many-to-many table will be properly handled even for operations that
occur on the &#8220;backref&#8221; side of the operation<a class="changeset-link headerlink reference internal" href="#change-87bb32d802de386360e5e46f791cdc52">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/249">#249</a></p>
</p>
</li>
<li><p id="change-0.3.6-8"><span class="target" id="change-f1fbd06064c54bcac62f1348d7009f7a"><strong>[orm] </strong></span>added &#8220;refresh-expire&#8221; cascade.  allows refresh() and
expire() calls to propagate along relationships.<a class="changeset-link headerlink reference internal" href="#change-f1fbd06064c54bcac62f1348d7009f7a">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/492">#492</a></p>
</p>
</li>
<li><p id="change-0.3.6-9"><span class="target" id="change-a975d6c5aa852fe9f1abe18ab4632941"><strong>[orm] </strong></span>more fixes to polymorphic relations, involving proper lazy-clause
generation on many-to-one relationships to polymorphic mappers. also fixes to detection of &#8220;direction&#8221;, more specific
targeting of columns that belong to the polymorphic union vs. those
that don&#8217;t.<a class="changeset-link headerlink reference internal" href="#change-a975d6c5aa852fe9f1abe18ab4632941">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/493">#493</a></p>
</p>
</li>
<li><p id="change-0.3.6-10"><span class="target" id="change-e60d7d1fb1e21d20e22cc7ee0a48e8cd"><strong>[orm] </strong></span>some fixes to relationship calcs when using &#8220;viewonly=True&#8221; to pull
in other tables into the join condition which arent parent of the
relationship&#8217;s parent/child mappings<a class="changeset-link headerlink reference internal" href="#change-e60d7d1fb1e21d20e22cc7ee0a48e8cd">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-11"><span class="target" id="change-0799b08072f174223f5a177a14fe3f19"><strong>[orm] </strong></span>flush fixes on cyclical-referential relationships that contain
references to other instances outside of the cyclical chain, when
some of the objects in the cycle are not actually part of the flush<a class="changeset-link headerlink reference internal" href="#change-0799b08072f174223f5a177a14fe3f19">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-12"><span class="target" id="change-2dd0c0ba2f51627186f0e3ca255e8679"><strong>[orm] </strong></span>put an aggressive check for &#8220;flushing object A with a collection of
B&#8217;s, but you put a C in the collection&#8221; error condition - <strong>even if
C is a subclass of B</strong>, unless B&#8217;s mapper loads polymorphically.
Otherwise, the collection will later load a &#8220;B&#8221; which should be a
&#8220;C&#8221; (since its not polymorphic) which breaks in bi-directional
relationships (i.e. C has its A, but A&#8217;s backref will lazyload it as
a different instance of type &#8220;B&#8221;) This check is going
to bite some of you who do this without issues, so the error message
will also document a flag &#8220;enable_typechecks=False&#8221; to disable this
checking. But be aware that bi-directional relationships in
particular become fragile without this check.<a class="changeset-link headerlink reference internal" href="#change-2dd0c0ba2f51627186f0e3ca255e8679">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/500">#500</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.6-sql">
<h3>sql<a class="headerlink" href="#change-0.3.6-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.6-13"><span class="target" id="change-44ab18885b5fa9a7f599390ae9397c22"><strong>[sql] </strong></span>bindparam() names are now repeatable!  specify two
distinct bindparam()s with the same name in a single statement,
and the key will be shared.  proper positional/named args translate
at compile time.  for the old behavior of &#8220;aliasing&#8221; bind parameters
with conflicting names, specify &#8220;unique=True&#8221; - this option is
still used internally for all the auto-genererated (value-based)
bind parameters.<a class="changeset-link headerlink reference internal" href="#change-44ab18885b5fa9a7f599390ae9397c22">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-14"><span class="target" id="change-32d223314680c88fa9ba080f5f3ce580"><strong>[sql] </strong></span>slightly better support for bind params as column clauses, either
via bindparam() or via literal(), i.e. select([literal(&#8216;foo&#8217;)])<a class="changeset-link headerlink reference internal" href="#change-32d223314680c88fa9ba080f5f3ce580">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-15"><span class="target" id="change-cb1ef430a2696531f4258c7a228b6cd8"><strong>[sql] </strong></span>MetaData can bind to an engine either via &#8220;url&#8221; or &#8220;engine&#8221; kwargs
to constructor, or by using connect() method. BoundMetaData is
identical to MetaData except engine_or_url param is required.
DynamicMetaData is the same and provides thread-local connections be
default.<a class="changeset-link headerlink reference internal" href="#change-cb1ef430a2696531f4258c7a228b6cd8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-16"><span class="target" id="change-ff3d112668eb0765f0cea567cbea6a17"><strong>[sql] </strong></span>exists() becomes useable as a standalone selectable, not just in a
WHERE clause, i.e. exists([columns], criterion).select()<a class="changeset-link headerlink reference internal" href="#change-ff3d112668eb0765f0cea567cbea6a17">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-17"><span class="target" id="change-f69f079d1a2ab1a6dcbf3d7ad218bba7"><strong>[sql] </strong></span>correlated subqueries work inside of ORDER BY, GROUP BY<a class="changeset-link headerlink reference internal" href="#change-f69f079d1a2ab1a6dcbf3d7ad218bba7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-18"><span class="target" id="change-2d6765ed8f52d6039f3ff327871651fe"><strong>[sql] </strong></span>fixed function execution with explicit connections, i.e.
conn.execute(func.dosomething())<a class="changeset-link headerlink reference internal" href="#change-2d6765ed8f52d6039f3ff327871651fe">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-19"><span class="target" id="change-a317e39c8ef05de7ec3007795cc6461d"><strong>[sql] </strong></span>use_labels flag on select() wont auto-create labels for literal text
column elements, since we can make no assumptions about the text. to
create labels for literal columns, you can say &#8220;somecol AS
somelabel&#8221;, or use literal_column(&#8220;somecol&#8221;).label(&#8220;somelabel&#8221;)<a class="changeset-link headerlink reference internal" href="#change-a317e39c8ef05de7ec3007795cc6461d">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-20"><span class="target" id="change-e3edeb29a5666be8fcc4ca01511c4215"><strong>[sql] </strong></span>quoting wont occur for literal columns when they are &#8220;proxied&#8221; into
the column collection for their selectable (is_literal flag is
propagated). literal columns are specified via
literal_column(&#8220;somestring&#8221;).<a class="changeset-link headerlink reference internal" href="#change-e3edeb29a5666be8fcc4ca01511c4215">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-21"><span class="target" id="change-f7c741c099c30418beeb3e590e129726"><strong>[sql] </strong></span>added &#8220;fold_equivalents&#8221; boolean argument to Join.select(), which
removes &#8216;duplicate&#8217; columns from the resulting column clause that
are known to be equivalent based on the join condition. this is of
great usage when constructing subqueries of joins which Postgres
complains about if duplicate column names are present.<a class="changeset-link headerlink reference internal" href="#change-f7c741c099c30418beeb3e590e129726">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-22"><span class="target" id="change-1b52c0cfb8178249dbfa27198e657e37"><strong>[sql] </strong></span>fixed use_alter flag on ForeignKeyConstraint<a class="changeset-link headerlink reference internal" href="#change-1b52c0cfb8178249dbfa27198e657e37">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/503">#503</a></p>
</p>
</li>
<li><p id="change-0.3.6-23"><span class="target" id="change-d6c64a3f6d7c0271de26273d1888c095"><strong>[sql] </strong></span>fixed usage of 2.4-only &#8220;reversed&#8221; in topological.py<a class="changeset-link headerlink reference internal" href="#change-d6c64a3f6d7c0271de26273d1888c095">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/506">#506</a></p>
</p>
</li>
<li><p id="change-0.3.6-24"><span class="target" id="change-11779379f1cac1ecc01fc15ac543b303"><strong>[sql] </strong></span>for hackers, refactored the &#8220;visitor&#8221; system of ClauseElement and
SchemaItem so that the traversal of items is controlled by the
ClauseVisitor itself, using the method visitor.traverse(item).
accept_visitor() methods can still be called directly but will not
do any traversal of child items. ClauseElement/SchemaItem now have a
configurable get_children() method to return the collection of child
elements for each parent object. This allows the full traversal of
items to be clear and unambiguous (as well as loggable), with an
easy method of limiting a traversal (just pass flags which are
picked up by appropriate get_children() methods).<a class="changeset-link headerlink reference internal" href="#change-11779379f1cac1ecc01fc15ac543b303">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/501">#501</a></p>
</p>
</li>
<li><p id="change-0.3.6-25"><span class="target" id="change-d3cf951f12ffc0a70ad1ada85b66a0a6"><strong>[sql] </strong></span>the &#8220;else_&#8221; parameter to the case statement now properly works when
set to zero.<a class="changeset-link headerlink reference internal" href="#change-d3cf951f12ffc0a70ad1ada85b66a0a6">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.6-mysql">
<h3>mysql<a class="headerlink" href="#change-0.3.6-mysql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.6-26"><span class="target" id="change-f0982bef56faed4137f772fe21cd4c31"><strong>[mysql] </strong></span>added a catchall **kwargs to MSString, to help reflection of
obscure types (like &#8220;varchar() binary&#8221; in MS 4.0)<a class="changeset-link headerlink reference internal" href="#change-f0982bef56faed4137f772fe21cd4c31">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-27"><span class="target" id="change-1af85a8922781c43c7653e350c30801f"><strong>[mysql] </strong></span>added explicit MSTimeStamp type which takes effect when using
types.TIMESTAMP.<a class="changeset-link headerlink reference internal" href="#change-1af85a8922781c43c7653e350c30801f">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.6-oracle">
<h3>oracle<a class="headerlink" href="#change-0.3.6-oracle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.6-28"><span class="target" id="change-1de005425b678cd46ecc85ed5837c9c7"><strong>[oracle] </strong></span>got binary working for any size input !  cx_oracle works fine,
it was my fault as BINARY was being passed and not BLOB for
setinputsizes (also unit tests weren&#8217;t even setting input sizes).<a class="changeset-link headerlink reference internal" href="#change-1de005425b678cd46ecc85ed5837c9c7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-29"><span class="target" id="change-12bd1d4f70a00eb5aa27999038a0d684"><strong>[oracle] </strong></span>also fixed CLOB read/write on a separate changeset.<a class="changeset-link headerlink reference internal" href="#change-12bd1d4f70a00eb5aa27999038a0d684">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-30"><span class="target" id="change-22b00f0def3ec2ee49bb7d7a5b878466"><strong>[oracle] </strong></span>auto_setinputsizes defaults to True for Oracle, fixed cases where
it improperly propagated bad types.<a class="changeset-link headerlink reference internal" href="#change-22b00f0def3ec2ee49bb7d7a5b878466">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.6-misc">
<h3>misc<a class="headerlink" href="#change-0.3.6-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.6-31"><span class="target" id="change-898f3d31d769657a997316a0a2a1b0ac"><strong>[extensions] </strong></span>options() method on SelectResults now implemented &#8220;generatively&#8221;
like the rest of the SelectResults methods.  But
you&#8217;re going to just use Query now anyway.<a class="changeset-link headerlink reference internal" href="#change-898f3d31d769657a997316a0a2a1b0ac">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/472">#472</a></p>
</p>
</li>
<li><p id="change-0.3.6-32"><span class="target" id="change-1eab2a69f89dd1f24faab811e0b58da3"><strong>[extensions] </strong></span>query() method is added by assignmapper.  this helps with
navigating to all the new generative methods on Query.<a class="changeset-link headerlink reference internal" href="#change-1eab2a69f89dd1f24faab811e0b58da3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-33"><span class="target" id="change-b87c523c857426c8d8b677b3058f15b5"><strong>[ms-sql] </strong></span><dl class="docutils">
<dt>removed seconds input on DATE column types (probably</dt>
<dd>should remove the time altogether)</dd>
</dl>
<a class="changeset-link headerlink reference internal" href="#change-b87c523c857426c8d8b677b3058f15b5">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-34"><span class="target" id="change-77ff33ca3510c4330712ef7ecea18a8d"><strong>[ms-sql] </strong></span>null values in float fields no longer raise errors<a class="changeset-link headerlink reference internal" href="#change-77ff33ca3510c4330712ef7ecea18a8d">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-35"><span class="target" id="change-542131c8c49c9372085c52a8c0cb56db"><strong>[ms-sql] </strong></span>LIMIT with OFFSET now raises an error (MS-SQL has no OFFSET support)<a class="changeset-link headerlink reference internal" href="#change-542131c8c49c9372085c52a8c0cb56db">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-36"><span class="target" id="change-92fb4300cf566200775defe777003a51"><strong>[ms-sql] </strong></span>added an facility to use the MSSQL type VARCHAR(max) instead of TEXT
for large unsized string fields. Use the new &#8220;text_as_varchar&#8221; to
turn it on.<a class="changeset-link headerlink reference internal" href="#change-92fb4300cf566200775defe777003a51">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/509">#509</a></p>
</p>
</li>
<li><p id="change-0.3.6-37"><span class="target" id="change-91f921f0eaffcbb7dcbb4e655c3787de"><strong>[ms-sql] </strong></span>ORDER BY clauses without a LIMIT are now stripped in subqueries, as
MS-SQL forbids this usage<a class="changeset-link headerlink reference internal" href="#change-91f921f0eaffcbb7dcbb4e655c3787de">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.6-38"><span class="target" id="change-4ac23e6c9087d3b35a82c00543826730"><strong>[ms-sql] </strong></span>cleanup of module importing code; specifiable DB-API module; more
explicit ordering of module preferences.<a class="changeset-link headerlink reference internal" href="#change-4ac23e6c9087d3b35a82c00543826730">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/480">#480</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">¶</a></h2>
Released: Thu Feb 22 2007<div class="section" id="change-0.3.5-orm">
<h3>orm<a class="headerlink" href="#change-0.3.5-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.5-0"><span class="target" id="change-8632b00faff5848753f92a330f517c03"><strong>[orm] [bugs] </strong></span>another refactoring to relationship calculation. Allows more accurate
ORM behavior with relationships from/to/between mappers, particularly
polymorphic mappers, also their usage with Query, SelectResults. tickets
include,,.<a class="changeset-link headerlink reference internal" href="#change-8632b00faff5848753f92a330f517c03">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/441">#441</a>, <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/448">#448</a>, <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/439">#439</a></p>
</p>
</li>
<li><p id="change-0.3.5-1"><span class="target" id="change-420a8dde82328a1c84d68b07f0f008e2"><strong>[orm] [bugs] </strong></span>removed deprecated method of specifying custom collections on classes;
you must now use the &#8220;collection_class&#8221; option. the old way was
beginning to produce conflicts when people used assign_mapper(), which
now patches an &#8220;options&#8221; method, in conjunction with a relationship
named &#8220;options&#8221;. (relationships take precedence over monkeypatched
assign_mapper methods).<a class="changeset-link headerlink reference internal" href="#change-420a8dde82328a1c84d68b07f0f008e2">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-2"><span class="target" id="change-b4ea85a697ce2e8a5476e0447b77ccf5"><strong>[orm] [bugs] </strong></span>extension() query option propagates to Mapper._instance() method so that
all loading-related methods get called<a class="changeset-link headerlink reference internal" href="#change-b4ea85a697ce2e8a5476e0447b77ccf5">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/454">#454</a></p>
</p>
</li>
<li><p id="change-0.3.5-3"><span class="target" id="change-a75844e9e51b998af08e42d79b17d007"><strong>[orm] [bugs] </strong></span>eager relation to an inheriting mapper wont fail if no rows returned for
the relationship.<a class="changeset-link headerlink reference internal" href="#change-a75844e9e51b998af08e42d79b17d007">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-4"><span class="target" id="change-ac80398579a4fcbae21783cc62160e08"><strong>[orm] [bugs] </strong></span>eager relation loading bug fixed for eager relation on multiple
descendant classes<a class="changeset-link headerlink reference internal" href="#change-ac80398579a4fcbae21783cc62160e08">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/486">#486</a></p>
</p>
</li>
<li><p id="change-0.3.5-5"><span class="target" id="change-c165d9646437c3f933401899647483cb"><strong>[orm] [bugs] </strong></span>fix for very large topological sorts, courtesy ants.aasma at gmail<a class="changeset-link headerlink reference internal" href="#change-c165d9646437c3f933401899647483cb">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/423">#423</a></p>
</p>
</li>
<li><p id="change-0.3.5-6"><span class="target" id="change-39ce034d909d6179f0e57da79c888648"><strong>[orm] [bugs] </strong></span>eager loading is slightly more strict about detecting &#8220;self-referential&#8221;
relationships, specifically between polymorphic mappers. this results in
an &#8220;eager degrade&#8221; to lazy loading.<a class="changeset-link headerlink reference internal" href="#change-39ce034d909d6179f0e57da79c888648">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-7"><span class="target" id="change-77cfca11a557e706eafddf5289843a1a"><strong>[orm] [bugs] </strong></span>improved support for complex queries embedded into &#8220;where&#8221; criterion for
query.select()<a class="changeset-link headerlink reference internal" href="#change-77cfca11a557e706eafddf5289843a1a">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/449">#449</a></p>
</p>
</li>
<li><p id="change-0.3.5-8"><span class="target" id="change-a86a3aad19cf61adc26984764ce96a8b"><strong>[orm] [bugs] </strong></span>mapper options like eagerload(), lazyload(), deferred(), will work for
&#8220;synonym()&#8221; relationships<a class="changeset-link headerlink reference internal" href="#change-a86a3aad19cf61adc26984764ce96a8b">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/485">#485</a></p>
</p>
</li>
<li><p id="change-0.3.5-9"><span class="target" id="change-b8e4711961e2f380e6a7714230498042"><strong>[orm] [bugs] </strong></span>fixed bug where cascade operations incorrectly included deleted
collection items in the cascade<a class="changeset-link headerlink reference internal" href="#change-b8e4711961e2f380e6a7714230498042">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/445">#445</a></p>
</p>
</li>
<li><p id="change-0.3.5-10"><span class="target" id="change-22e5b7ae7b767a70ea7e0f53ad7e8248"><strong>[orm] [bugs] </strong></span>fixed relationship deletion error when one-to-many child item is moved
to a new parent in a single unit of work<a class="changeset-link headerlink reference internal" href="#change-22e5b7ae7b767a70ea7e0f53ad7e8248">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/478">#478</a></p>
</p>
</li>
<li><p id="change-0.3.5-11"><span class="target" id="change-226133d12414c7bceb0d870564d2db9e"><strong>[orm] [bugs] </strong></span>fixed relationship deletion error where parent/child with a single
column as PK/FK on the child would raise a &#8220;blank out the primary key&#8221;
error, if manually deleted or &#8220;delete&#8221; cascade without &#8220;delete-orphan&#8221;
was used<a class="changeset-link headerlink reference internal" href="#change-226133d12414c7bceb0d870564d2db9e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-12"><span class="target" id="change-559fd083469a062e02481918053495a7"><strong>[orm] [bugs] </strong></span>fix to deferred so that load operation doesn&#8217;t mistakenly occur when only
PK col attributes are set<a class="changeset-link headerlink reference internal" href="#change-559fd083469a062e02481918053495a7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-13"><span class="target" id="change-6c4ac23619895aa1814ccc031d40da8a"><strong>[orm] [enhancements] </strong></span>implemented foreign_keys argument to mapper. use in
conjunction with primaryjoin/secondaryjoin arguments to specify/override
foreign keys defined on the Table instance.<a class="changeset-link headerlink reference internal" href="#change-6c4ac23619895aa1814ccc031d40da8a">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/385">#385</a></p>
</p>
</li>
<li><p id="change-0.3.5-14"><span class="target" id="change-0755a972913cdf4f3d3ea28113aad132"><strong>[orm] [enhancements] </strong></span>contains_eager(&#8216;foo&#8217;) automatically implies eagerload(&#8216;foo&#8217;)<a class="changeset-link headerlink reference internal" href="#change-0755a972913cdf4f3d3ea28113aad132">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-15"><span class="target" id="change-9559eca8c71abf14afd98ee3ccfd4f01"><strong>[orm] [enhancements] </strong></span>added &#8220;alias&#8221; argument to contains_eager(). use it to specify the string
name or Alias instance of an alias used in the query for the eagerly
loaded child items. easier to use than &#8220;decorator&#8221;<a class="changeset-link headerlink reference internal" href="#change-9559eca8c71abf14afd98ee3ccfd4f01">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-16"><span class="target" id="change-290a67bd31b7240bb829d5f3a1a8b913"><strong>[orm] [enhancements] </strong></span>added &#8220;contains_alias()&#8221; option for result set mapping to an alias of
the mapped table<a class="changeset-link headerlink reference internal" href="#change-290a67bd31b7240bb829d5f3a1a8b913">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-17"><span class="target" id="change-4df85d62086609340f9ec07957b97137"><strong>[orm] [enhancements] </strong></span>added support for py2.5 &#8220;with&#8221; statement with SessionTransaction<a class="changeset-link headerlink reference internal" href="#change-4df85d62086609340f9ec07957b97137">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/468">#468</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.5-sql">
<h3>sql<a class="headerlink" href="#change-0.3.5-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.5-18"><span class="target" id="change-0fe6675045936336cf076722fc9f4258"><strong>[sql] </strong></span>the value of &#8220;case_sensitive&#8221; defaults to True now, regardless of the
casing of the identifier, unless specifically set to False. this is
because the object might be label&#8217;ed as something else which does
contain mixed case, and propigating &#8220;case_sensitive=False&#8221; breaks that.
Other fixes to quoting when using labels and &#8220;fake&#8221; column objects<a class="changeset-link headerlink reference internal" href="#change-0fe6675045936336cf076722fc9f4258">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-19"><span class="target" id="change-6c984550b02caf3742ce38d0ea98e80f"><strong>[sql] </strong></span>added a &#8220;supports_execution()&#8221; method to ClauseElement, so that
individual kinds of clauses can express if they are appropriate for
executing...such as, you can execute a &#8220;select&#8221;, but not a &#8220;Table&#8221; or a
&#8220;Join&#8221;.<a class="changeset-link headerlink reference internal" href="#change-6c984550b02caf3742ce38d0ea98e80f">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-20"><span class="target" id="change-468f50da50e57a2dec8feb5e1ee1d75f"><strong>[sql] </strong></span>fixed argument passing to straight textual execute() on engine,
connection. can handle *args or a list instance for positional, **kwargs
or a dict instance for named args, or a list of list or dicts to invoke
executemany()<a class="changeset-link headerlink reference internal" href="#change-468f50da50e57a2dec8feb5e1ee1d75f">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-21"><span class="target" id="change-799305b1c45d8b2c0b35daf24d651579"><strong>[sql] </strong></span>small fix to BoundMetaData to accept unicode or string URLs<a class="changeset-link headerlink reference internal" href="#change-799305b1c45d8b2c0b35daf24d651579">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-22"><span class="target" id="change-098b0d8af7d1d8c4ac68ce0f0d1ab760"><strong>[sql] </strong></span>fixed named PrimaryKeyConstraint generation courtesy
andrija at gmail<a class="changeset-link headerlink reference internal" href="#change-098b0d8af7d1d8c4ac68ce0f0d1ab760">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/466">#466</a></p>
</p>
</li>
<li><p id="change-0.3.5-23"><span class="target" id="change-70b974d0c4113b161566331bfc78053f"><strong>[sql] </strong></span>fixed generation of CHECK constraints on columns<a class="changeset-link headerlink reference internal" href="#change-70b974d0c4113b161566331bfc78053f">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/464">#464</a></p>
</p>
</li>
<li><p id="change-0.3.5-24"><span class="target" id="change-d49ca559d4c734d1aaa61ba5a98e8a44"><strong>[sql] </strong></span>fixes to tometadata() operation to propagate Constraints at column and
table level<a class="changeset-link headerlink reference internal" href="#change-d49ca559d4c734d1aaa61ba5a98e8a44">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.5-mysql">
<h3>mysql<a class="headerlink" href="#change-0.3.5-mysql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.5-25"><span class="target" id="change-23cbc502382175b57e3d21030a2373c2"><strong>[mysql] </strong></span>fix to reflection on older DB&#8217;s that might return array() type for
&#8220;show variables like&#8221; statements<a class="changeset-link headerlink reference internal" href="#change-23cbc502382175b57e3d21030a2373c2">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.5-mssql">
<h3>mssql<a class="headerlink" href="#change-0.3.5-mssql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.5-26"><span class="target" id="change-2c2ff52404aa9423f3b197ef8d064c57"><strong>[mssql] </strong></span>preliminary support for pyodbc (Yay!)<a class="changeset-link headerlink reference internal" href="#change-2c2ff52404aa9423f3b197ef8d064c57">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/419">#419</a></p>
</p>
</li>
<li><p id="change-0.3.5-27"><span class="target" id="change-7e0d0b6aa2b56dd8a2643a2a996c1ce6"><strong>[mssql] </strong></span>better support for NVARCHAR types added<a class="changeset-link headerlink reference internal" href="#change-7e0d0b6aa2b56dd8a2643a2a996c1ce6">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/298">#298</a></p>
</p>
</li>
<li><p id="change-0.3.5-28"><span class="target" id="change-5456de0e05ace2611637223ef9c3b1a3"><strong>[mssql] </strong></span>fix for commit logic on pymssql<a class="changeset-link headerlink reference internal" href="#change-5456de0e05ace2611637223ef9c3b1a3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-29"><span class="target" id="change-dd705f65a8f579d9f21e357b630ce0e1"><strong>[mssql] </strong></span>fix for query.get() with schema<a class="changeset-link headerlink reference internal" href="#change-dd705f65a8f579d9f21e357b630ce0e1">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/456">#456</a></p>
</p>
</li>
<li><p id="change-0.3.5-30"><span class="target" id="change-911cdebc2d34a378435f400bf0cf630e"><strong>[mssql] </strong></span>fix for non-integer relationships<a class="changeset-link headerlink reference internal" href="#change-911cdebc2d34a378435f400bf0cf630e">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/473">#473</a></p>
</p>
</li>
<li><p id="change-0.3.5-31"><span class="target" id="change-539d4ad681f7456880dabe1620b68588"><strong>[mssql] </strong></span>DB-API module now selectable at run-time<a class="changeset-link headerlink reference internal" href="#change-539d4ad681f7456880dabe1620b68588">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/419">#419</a></p>
</p>
</li>
<li><p id="change-0.3.5-32"><span class="target" id="change-59dc7293d796646a217909587ba56fb7"><strong>[mssql] [415] [tickets:422] [481] </strong></span>now passes many more unit tests<a class="changeset-link headerlink reference internal" href="#change-59dc7293d796646a217909587ba56fb7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-33"><span class="target" id="change-9f0b045815840276afd66940cbba759c"><strong>[mssql] </strong></span>better unittest compatibility with ANSI functions<a class="changeset-link headerlink reference internal" href="#change-9f0b045815840276afd66940cbba759c">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/479">#479</a></p>
</p>
</li>
<li><p id="change-0.3.5-34"><span class="target" id="change-381a1076dd1ae05a9d9d968cdf1c5bc9"><strong>[mssql] </strong></span>improved support for implicit sequence PK columns with auto-insert<a class="changeset-link headerlink reference internal" href="#change-381a1076dd1ae05a9d9d968cdf1c5bc9">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/415">#415</a></p>
</p>
</li>
<li><p id="change-0.3.5-35"><span class="target" id="change-dcdda808c45d24c958d8be769f83003f"><strong>[mssql] </strong></span>fix for blank password in adodbapi<a class="changeset-link headerlink reference internal" href="#change-dcdda808c45d24c958d8be769f83003f">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/371">#371</a></p>
</p>
</li>
<li><p id="change-0.3.5-36"><span class="target" id="change-1075fe6db448bd584e19ab492e5f8c5c"><strong>[mssql] </strong></span>fixes to get unit tests working with pyodbc<a class="changeset-link headerlink reference internal" href="#change-1075fe6db448bd584e19ab492e5f8c5c">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/481">#481</a></p>
</p>
</li>
<li><p id="change-0.3.5-37"><span class="target" id="change-5bdb627a7d2ed7ec5bc84c7ebf111216"><strong>[mssql] </strong></span>fix to auto_identity_insert on db-url query<a class="changeset-link headerlink reference internal" href="#change-5bdb627a7d2ed7ec5bc84c7ebf111216">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-38"><span class="target" id="change-b8f7e80d560caa5ae3aec32c6e922ef6"><strong>[mssql] </strong></span>added query_timeout to db-url query parms. currently works only for
pymssql<a class="changeset-link headerlink reference internal" href="#change-b8f7e80d560caa5ae3aec32c6e922ef6">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-39"><span class="target" id="change-2cea7ef341a84d5cc0ea53fd071ce1af"><strong>[mssql] </strong></span>tested with pymssql 0.8.0 (which is now LGPL)<a class="changeset-link headerlink reference internal" href="#change-2cea7ef341a84d5cc0ea53fd071ce1af">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.5-oracle">
<h3>oracle<a class="headerlink" href="#change-0.3.5-oracle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.5-40"><span class="target" id="change-f2964e13050167fa913d5346579ed93a"><strong>[oracle] </strong></span>when returning &#8220;rowid&#8221; as the ORDER BY column or in use with ROW_NUMBER
OVER, oracle dialect checks the selectable its being applied to and will
switch to table PK if not applicable, i.e. for a UNION. checking for
DISTINCT, GROUP BY (other places that rowid is invalid) still a TODO.
allows polymorphic mappings to function.<a class="changeset-link headerlink reference internal" href="#change-f2964e13050167fa913d5346579ed93a">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/436">#436</a></p>
</p>
</li>
<li><p id="change-0.3.5-41"><span class="target" id="change-997cdb0c8e4db76469d84ce1e36ff870"><strong>[oracle] </strong></span>sequences on a non-pk column will properly fire off on INSERT<a class="changeset-link headerlink reference internal" href="#change-997cdb0c8e4db76469d84ce1e36ff870">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-42"><span class="target" id="change-41b33afb60cf82b8b6a4a0bb859562bf"><strong>[oracle] </strong></span>added PrefetchingResultProxy support to pre-fetch LOB columns when they
are known to be present, fixes<a class="changeset-link headerlink reference internal" href="#change-41b33afb60cf82b8b6a4a0bb859562bf">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/435">#435</a></p>
</p>
</li>
<li><p id="change-0.3.5-43"><span class="target" id="change-a87a4c61e30aa01276449a37779f7083"><strong>[oracle] </strong></span>implemented reflection of tables based on synonyms, including across
dblinks<a class="changeset-link headerlink reference internal" href="#change-a87a4c61e30aa01276449a37779f7083">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/379">#379</a></p>
</p>
</li>
<li><p id="change-0.3.5-44"><span class="target" id="change-b8639b7a31e537e7f11dcd8f241550b6"><strong>[oracle] </strong></span>issues a log warning when a related table cant be reflected due to
certain permission errors<a class="changeset-link headerlink reference internal" href="#change-b8639b7a31e537e7f11dcd8f241550b6">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/363">#363</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.5-misc">
<h3>misc<a class="headerlink" href="#change-0.3.5-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.5-45"><span class="target" id="change-cc97a0bde59a0e25d2d0180cee1209a0"><strong>[postgres] </strong></span>better reflection of sequences for alternate-schema Tables<a class="changeset-link headerlink reference internal" href="#change-cc97a0bde59a0e25d2d0180cee1209a0">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/442">#442</a></p>
</p>
</li>
<li><p id="change-0.3.5-46"><span class="target" id="change-997cdb0c8e4db76469d84ce1e36ff870"><strong>[postgres] </strong></span>sequences on a non-pk column will properly fire off on INSERT<a class="changeset-link headerlink reference internal" href="#change-997cdb0c8e4db76469d84ce1e36ff870">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-47"><span class="target" id="change-848a61af4172ae1b5f0fc0247de36987"><strong>[postgres] </strong></span>added PGInterval type, PGInet type<a class="changeset-link headerlink reference internal" href="#change-848a61af4172ae1b5f0fc0247de36987">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/460">#460</a>, <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/444">#444</a></p>
</p>
</li>
<li><p id="change-0.3.5-48"><span class="target" id="change-bd2bb531eaffdeab9654a4cd07ef2c2b"><strong>[extensions] </strong></span>added distinct() method to SelectResults. generally should only make a
difference when using count().<a class="changeset-link headerlink reference internal" href="#change-bd2bb531eaffdeab9654a4cd07ef2c2b">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.5-49"><span class="target" id="change-e49cd2a7ca945f2421ae6902f52f8f37"><strong>[extensions] </strong></span>added options() method to SelectResults, equivalent to query.options()<a class="changeset-link headerlink reference internal" href="#change-e49cd2a7ca945f2421ae6902f52f8f37">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/472">#472</a></p>
</p>
</li>
<li><p id="change-0.3.5-50"><span class="target" id="change-cdde06072236d420f2b8e3603362354e"><strong>[extensions] </strong></span>added optional __table_opts__ dictionary to ActiveMapper, will send kw
options to Table objects<a class="changeset-link headerlink reference internal" href="#change-cdde06072236d420f2b8e3603362354e">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/462">#462</a></p>
</p>
</li>
<li><p id="change-0.3.5-51"><span class="target" id="change-a43a8ee036b96770b37d4e02ab37b4c0"><strong>[extensions] </strong></span>added selectfirst(), selectfirst_by() to assign_mapper<a class="changeset-link headerlink reference internal" href="#change-a43a8ee036b96770b37d4e02ab37b4c0">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/467">#467</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">¶</a></h2>
Released: Tue Jan 23 2007<div class="section" id="change-0.3.4-general">
<h3>general<a class="headerlink" href="#change-0.3.4-general" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-0"><span class="target" id="change-ea7ee482db28ede59ac4bcfe7508bb68"><strong>[general] </strong></span>global &#8220;insure&#8221;-&gt;&#8221;ensure&#8221; change. in US english &#8220;insure&#8221; is actually
largely interchangeable with &#8220;ensure&#8221; (so says the dictionary), so I&#8217;m not
completely illiterate, but its definitely sub-optimal to &#8220;ensure&#8221; which is
non-ambiguous.<a class="changeset-link headerlink reference internal" href="#change-ea7ee482db28ede59ac4bcfe7508bb68">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.4-orm">
<h3>orm<a class="headerlink" href="#change-0.3.4-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-1"><span class="target" id="change-3d028e23313c343b88f683148079f6d8"><strong>[orm] </strong></span>poked the first hole in the can of worms: saying
query.select_by(somerelationname=someinstance) will create the join of the
primary key columns represented by &#8220;somerelationname&#8220;&#8216;s mapper to the
actual primary key in &#8220;someinstance&#8221;.<a class="changeset-link headerlink reference internal" href="#change-3d028e23313c343b88f683148079f6d8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-2"><span class="target" id="change-5601e1cae87763b3397a1dff4dc3479c"><strong>[orm] </strong></span>reworked how relations interact with &#8220;polymorphic&#8221; mappers, i.e. mappers
that have a select_table as well as polymorphic flags. better determination
of proper join conditions, interaction with user- defined join conditions,
and support for self-referential polymorphic mappers.<a class="changeset-link headerlink reference internal" href="#change-5601e1cae87763b3397a1dff4dc3479c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-3"><span class="target" id="change-77a27e5fc8a0403c05553cd6268b57ce"><strong>[orm] </strong></span>related to polymorphic mapping relations, some deeper error checking when
compiling relations, to detect an ambiguous &#8220;primaryjoin&#8221; in the case that
both sides of the relationship have foreign key references in the primary
join condition. also tightened down conditions used to locate &#8220;relation
direction&#8221;, associating the &#8220;foreignkey&#8221; of the relationship with the
&#8220;primaryjoin&#8221;<a class="changeset-link headerlink reference internal" href="#change-77a27e5fc8a0403c05553cd6268b57ce">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-4"><span class="target" id="change-b68e439ba854a97afc57d071074809ec"><strong>[orm] </strong></span>a little bit of improvement to the concept of a &#8220;concrete&#8221; inheritance
mapping, though that concept is not well fleshed out yet (added test case
to support concrete mappers on top of a polymorphic base).<a class="changeset-link headerlink reference internal" href="#change-b68e439ba854a97afc57d071074809ec">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-5"><span class="target" id="change-fc43ebe81ca938a541f0089c23bfb7a8"><strong>[orm] </strong></span>fix to &#8220;proxy=True&#8221; behavior on synonym()<a class="changeset-link headerlink reference internal" href="#change-fc43ebe81ca938a541f0089c23bfb7a8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-6"><span class="target" id="change-351dd3d3f2b53af4c434ce66c226cef5"><strong>[orm] </strong></span>fixed bug where delete-orphan basically didn&#8217;t work with many-to-many
relationships, backref presence generally hid the symptom<a class="changeset-link headerlink reference internal" href="#change-351dd3d3f2b53af4c434ce66c226cef5">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/427">#427</a></p>
</p>
</li>
<li><p id="change-0.3.4-7"><span class="target" id="change-231c94f2c6414edd8ef94f7de383d349"><strong>[orm] </strong></span>added a mutex to the mapper compilation step. ive been reluctant to add any
kind of threading anything to SA but this is one spot that its really
needed since mappers are typically &#8220;global&#8221;, and while their state does not
change during normal operation, the initial compilation step does modify
internal state significantly, and this step usually occurs not at
module-level initialization time (unless you call compile()) but at
first-request time<a class="changeset-link headerlink reference internal" href="#change-231c94f2c6414edd8ef94f7de383d349">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-8"><span class="target" id="change-40191965cf8a1fffbd5f3f7c476c442e"><strong>[orm] </strong></span>basic idea of &#8220;session.merge()&#8221; actually implemented.  needs more testing.<a class="changeset-link headerlink reference internal" href="#change-40191965cf8a1fffbd5f3f7c476c442e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-9"><span class="target" id="change-1fcc21636195b3b7a6c4751ded7aacc7"><strong>[orm] </strong></span>added &#8220;compile_mappers()&#8221; function as a shortcut to compiling all mappers<a class="changeset-link headerlink reference internal" href="#change-1fcc21636195b3b7a6c4751ded7aacc7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-10"><span class="target" id="change-a564633ea1853007aeaac37573a81ee6"><strong>[orm] </strong></span>fix to MapperExtension create_instance so that entity_name properly
associated with new instance<a class="changeset-link headerlink reference internal" href="#change-a564633ea1853007aeaac37573a81ee6">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-11"><span class="target" id="change-9eccc99856ce597d36eae3266f7614b6"><strong>[orm] </strong></span>speed enhancements to ORM object instantiation, eager loading of rows<a class="changeset-link headerlink reference internal" href="#change-9eccc99856ce597d36eae3266f7614b6">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-12"><span class="target" id="change-dd4031a82befed9119e377543328f8c0"><strong>[orm] </strong></span>invalid options sent to &#8216;cascade&#8217; string will raise an exception<a class="changeset-link headerlink reference internal" href="#change-dd4031a82befed9119e377543328f8c0">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/406">#406</a></p>
</p>
</li>
<li><p id="change-0.3.4-13"><span class="target" id="change-32423083b9cdff2c1cfd63c406fe3d93"><strong>[orm] </strong></span>fixed bug in mapper refresh/expire whereby eager loaders didn&#8217;t properly
re-populate item lists<a class="changeset-link headerlink reference internal" href="#change-32423083b9cdff2c1cfd63c406fe3d93">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/407">#407</a></p>
</p>
</li>
<li><p id="change-0.3.4-14"><span class="target" id="change-4c9bf70f421052228204cfd54e3196b0"><strong>[orm] </strong></span>fix to post_update to ensure rows are updated even for non insert/delete
scenarios<a class="changeset-link headerlink reference internal" href="#change-4c9bf70f421052228204cfd54e3196b0">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/413">#413</a></p>
</p>
</li>
<li><p id="change-0.3.4-15"><span class="target" id="change-003b8a29b4cd8dc41607198658523317"><strong>[orm] </strong></span>added an error message if you actually try to modify primary key values on
an entity and then flush it<a class="changeset-link headerlink reference internal" href="#change-003b8a29b4cd8dc41607198658523317">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/412">#412</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.4-sql">
<h3>sql<a class="headerlink" href="#change-0.3.4-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-16"><span class="target" id="change-e485ef1aa25a4c1e54a8d7a9afa8749e"><strong>[sql] </strong></span>added &#8220;fetchmany()&#8221; support to ResultProxy<a class="changeset-link headerlink reference internal" href="#change-e485ef1aa25a4c1e54a8d7a9afa8749e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-17"><span class="target" id="change-594afe1f5a9a758e9428229d6e156f32"><strong>[sql] </strong></span>added support for column &#8220;key&#8221; attribute to be useable in
row[&lt;key&gt;]/row.&lt;key&gt;<a class="changeset-link headerlink reference internal" href="#change-594afe1f5a9a758e9428229d6e156f32">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-18"><span class="target" id="change-36de194453369736e2c6d36951589a57"><strong>[sql] </strong></span>changed &#8220;BooleanExpression&#8221; to subclass from &#8220;BinaryExpression&#8221;, so that
boolean expressions can also follow column-clause behaviors (i.e. label(),
etc).<a class="changeset-link headerlink reference internal" href="#change-36de194453369736e2c6d36951589a57">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-19"><span class="target" id="change-fd647f39d01615d6a2c872791f220b3d"><strong>[sql] </strong></span>trailing underscores are trimmed from func.&lt;xxx&gt; calls, such as func.if_()<a class="changeset-link headerlink reference internal" href="#change-fd647f39d01615d6a2c872791f220b3d">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-20"><span class="target" id="change-7c82a8fe27927597ae6beb2b46eaaa4e"><strong>[sql] </strong></span>fix to correlation of subqueries when the column list of the select
statement is constructed with individual calls to append_column(); this
fixes an ORM bug whereby nested select statements were not getting
correlated with the main select generated by the Query object.<a class="changeset-link headerlink reference internal" href="#change-7c82a8fe27927597ae6beb2b46eaaa4e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-21"><span class="target" id="change-9e9c62f87ee18fefb379e8a4754ae2f8"><strong>[sql] </strong></span>another fix to subquery correlation so that a subquery which has only one
FROM element will <em>not</em> correlate that single element, since at least one
FROM element is required in a query.<a class="changeset-link headerlink reference internal" href="#change-9e9c62f87ee18fefb379e8a4754ae2f8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-22"><span class="target" id="change-5f52342a7f4ca2f210861d452dec505a"><strong>[sql] </strong></span>default &#8220;timezone&#8221; setting is now False. this corresponds to Python&#8217;s
datetime behavior as well as Postgres&#8217; timestamp/time types (which is the
only timezone-sensitive dialect at the moment)<a class="changeset-link headerlink reference internal" href="#change-5f52342a7f4ca2f210861d452dec505a">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/414">#414</a></p>
</p>
</li>
<li><p id="change-0.3.4-23"><span class="target" id="change-66229214f0f9e03fc7dee45d95c8e67c"><strong>[sql] </strong></span>the &#8220;op()&#8221; function is now treated as an &#8220;operation&#8221;, rather than a
&#8220;comparison&#8221;. the difference is, an operation produces a BinaryExpression
from which further operations can occur whereas comparison produces the
more restrictive BooleanExpression<a class="changeset-link headerlink reference internal" href="#change-66229214f0f9e03fc7dee45d95c8e67c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-24"><span class="target" id="change-d41715babcf6b70d6f88adf677313ea8"><strong>[sql] </strong></span>trying to redefine a reflected primary key column as non-primary key raises
an error<a class="changeset-link headerlink reference internal" href="#change-d41715babcf6b70d6f88adf677313ea8">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-25"><span class="target" id="change-a8e520f2f077ca90381491c36493fe9d"><strong>[sql] </strong></span>type system slightly modified to support TypeDecorators that can be
overridden by the dialect (ok, that&#8217;s not very clear, it allows the mssql
tweak below to be possible)<a class="changeset-link headerlink reference internal" href="#change-a8e520f2f077ca90381491c36493fe9d">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.4-mysql">
<h3>mysql<a class="headerlink" href="#change-0.3.4-mysql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-26"><span class="target" id="change-5398fcc75e1c898762a840d5476e9802"><strong>[mysql] </strong></span>mysql is inconsistent with what kinds of quotes it uses in foreign keys
during a SHOW CREATE TABLE, reflection updated to accommodate for all three
styles<a class="changeset-link headerlink reference internal" href="#change-5398fcc75e1c898762a840d5476e9802">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/420">#420</a></p>
</p>
</li>
<li><p id="change-0.3.4-27"><span class="target" id="change-93636efc4d02d5b5e25f763da5f6dbb6"><strong>[mysql] </strong></span>mysql table create options work on a generic passthru now, i.e. Table(...,
mysql_engine=&#8217;InnoDB&#8217;, mysql_collate=&#8221;latin1_german2_ci&#8221;,
mysql_auto_increment=&#8221;5&#8221;, mysql_&lt;somearg&gt;...), helps<a class="changeset-link headerlink reference internal" href="#change-93636efc4d02d5b5e25f763da5f6dbb6">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/418">#418</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.4-mssql">
<h3>mssql<a class="headerlink" href="#change-0.3.4-mssql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-28"><span class="target" id="change-71800340e8b8eaf7f5bbfeb1bb7fa8fa"><strong>[mssql] </strong></span>added an NVarchar type (produces NVARCHAR), also MSUnicode which provides
Unicode-translation for the NVarchar regardless of dialect convert_unicode
setting.<a class="changeset-link headerlink reference internal" href="#change-71800340e8b8eaf7f5bbfeb1bb7fa8fa">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.4-oracle">
<h3>oracle<a class="headerlink" href="#change-0.3.4-oracle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-29"><span class="target" id="change-7e37b511a75dea4c081f6e861d2577d9"><strong>[oracle] </strong></span><em>slight</em> support for binary, but still need to figure out how to insert
reasonably large values (over 4K). requires auto_setinputsizes=True sent to
create_engine(), rows must be fully fetched individually, etc.<a class="changeset-link headerlink reference internal" href="#change-7e37b511a75dea4c081f6e861d2577d9">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.4-firebird">
<h3>firebird<a class="headerlink" href="#change-0.3.4-firebird" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-30"><span class="target" id="change-f5553b26f95beaede1e3993d72351403"><strong>[firebird] </strong></span>order of constraint creation puts primary key first before all other
constraints; required for firebird, not a bad idea for others<a class="changeset-link headerlink reference internal" href="#change-f5553b26f95beaede1e3993d72351403">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/408">#408</a></p>
</p>
</li>
<li><p id="change-0.3.4-31"><span class="target" id="change-7d0941d7be1eff286a79a26140dbec40"><strong>[firebird] </strong></span>Firebird fix to autoload multifield foreign keys<a class="changeset-link headerlink reference internal" href="#change-7d0941d7be1eff286a79a26140dbec40">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/409">#409</a></p>
</p>
</li>
<li><p id="change-0.3.4-32"><span class="target" id="change-1dd0655cdeb215bba70f97a6144d2d79"><strong>[firebird] </strong></span>Firebird NUMERIC type properly handles a type without precision<a class="changeset-link headerlink reference internal" href="#change-1dd0655cdeb215bba70f97a6144d2d79">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/409">#409</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.4-misc">
<h3>misc<a class="headerlink" href="#change-0.3.4-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.4-33"><span class="target" id="change-fa53dae6bfd7b7e8b384d216ee8ba515"><strong>[postgres] </strong></span>fix to the initial checkfirst for tables to take current schema into
account<a class="changeset-link headerlink reference internal" href="#change-fa53dae6bfd7b7e8b384d216ee8ba515">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/424">#424</a></p>
</p>
</li>
<li><p id="change-0.3.4-34"><span class="target" id="change-1cd224ad7dc6c4a22f02a844273d939f"><strong>[postgres] </strong></span>postgres has an optional &#8220;server_side_cursors=True&#8221; flag which will utilize
server side cursors. these are appropriate for fetching only partial
results and are necessary for working with very large unbounded result
sets. While we&#8217;d like this to be the default behavior, different
environments seem to have different results and the causes have not been
isolated so we are leaving the feature off by default for now. Uses an
apparently undocumented psycopg2 behavior recently discovered on the
psycopg mailing list.<a class="changeset-link headerlink reference internal" href="#change-1cd224ad7dc6c4a22f02a844273d939f">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-35"><span class="target" id="change-6f6b781d6e5399b6526088cc619cd843"><strong>[postgres] </strong></span>added &#8220;BIGSERIAL&#8221; support for postgres table with
PGBigInteger/autoincrement<a class="changeset-link headerlink reference internal" href="#change-6f6b781d6e5399b6526088cc619cd843">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.4-36"><span class="target" id="change-61cfe585aaae9ecddaff0f20996405f7"><strong>[postgres] </strong></span>fixes to postgres reflection to better handle when schema names are
present; thanks to jason (at) ncsmags.com<a class="changeset-link headerlink reference internal" href="#change-61cfe585aaae9ecddaff0f20996405f7">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/402">#402</a></p>
</p>
</li>
<li><p id="change-0.3.4-37"><span class="target" id="change-d06299a138c88ba57c7c327e826b3f81"><strong>[extensions] </strong></span>added &#8220;validate=False&#8221; argument to assign_mapper, if True will ensure that
only mapped attributes are named<a class="changeset-link headerlink reference internal" href="#change-d06299a138c88ba57c7c327e826b3f81">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/426">#426</a></p>
</p>
</li>
<li><p id="change-0.3.4-38"><span class="target" id="change-7e48f7fba0d3f1b5bad84893f66dc9f4"><strong>[extensions] </strong></span>assign_mapper gets &#8220;options&#8221;, &#8220;instances&#8221; functions added (i.e.
MyClass.instances())<a class="changeset-link headerlink reference internal" href="#change-7e48f7fba0d3f1b5bad84893f66dc9f4">¶</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">¶</a></h2>
Released: Fri Dec 15 2006<ul class="simple">
<li><p id="change-0.3.3-0"><span class="target" id="change-5032f5e367ae143bbec87043ab8fcf11"></span>string-based FROM clauses fixed, i.e. select(..., from_obj=[&#8220;sometext&#8221;])<a class="changeset-link headerlink reference internal" href="#change-5032f5e367ae143bbec87043ab8fcf11">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.3-1"><span class="target" id="change-a496d8fae942c14d4523057bd979019c"></span>fixes to passive_deletes flag, lazy=None (noload) flag<a class="changeset-link headerlink reference internal" href="#change-a496d8fae942c14d4523057bd979019c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.3-2"><span class="target" id="change-30a2c69a9decacc368b9a7b6779980ec"></span>added example/docs for dealing with large collections<a class="changeset-link headerlink reference internal" href="#change-30a2c69a9decacc368b9a7b6779980ec">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.3-3"><span class="target" id="change-cc99c5f52ba79f63b5f7b50754788b0a"></span>added object_session() method to sqlalchemy namespace<a class="changeset-link headerlink reference internal" href="#change-cc99c5f52ba79f63b5f7b50754788b0a">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.3-4"><span class="target" id="change-80533f7c200e079d90597f6266ff66d5"></span>fixed QueuePool bug whereby its better able to reconnect to a database
that was not reachable (thanks to SÃ©bastien Lelong), also fixed dispose()
method<a class="changeset-link headerlink reference internal" href="#change-80533f7c200e079d90597f6266ff66d5">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.3-5"><span class="target" id="change-d1570d0ab054957641111d7e277d03b4"></span>patch that makes MySQL rowcount work correctly!<a class="changeset-link headerlink reference internal" href="#change-d1570d0ab054957641111d7e277d03b4">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/396">#396</a></p>
</p>
</li>
<li><p id="change-0.3.3-6"><span class="target" id="change-2cadf5490827d447b1d4830a90b41caf"></span>fix to MySQL catch of 2006/2014 errors to properly re-raise OperationalError
exception<a class="changeset-link headerlink reference internal" href="#change-2cadf5490827d447b1d4830a90b41caf">¶</a><p></p>
</p>
</li>
</ul>
</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">¶</a></h2>
Released: Sun Dec 10 2006<ul class="simple">
<li><p id="change-0.3.2-0"><span class="target" id="change-19098e0e6eed7c931125d7e25d812756"></span>major connection pool bug fixed.  fixes MySQL out of sync
errors, will also prevent transactions getting rolled back
accidentally in all DBs<a class="changeset-link headerlink reference internal" href="#change-19098e0e6eed7c931125d7e25d812756">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/387">#387</a></p>
</p>
</li>
<li><p id="change-0.3.2-1"><span class="target" id="change-278ff1b4865a34c36458359bdba8e20e"></span>major speed enhancements vs. 0.3.1, to bring speed
back to 0.2.8 levels<a class="changeset-link headerlink reference internal" href="#change-278ff1b4865a34c36458359bdba8e20e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-2"><span class="target" id="change-da5c4522ae9018928c5a69dbe99fa7f3"></span>made conditional dozens of debug log calls that were
time-intensive to generate log messages<a class="changeset-link headerlink reference internal" href="#change-da5c4522ae9018928c5a69dbe99fa7f3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-3"><span class="target" id="change-47d47dccb2480566207c5fe438fcf435"></span>fixed bug in cascade rules whereby the entire object graph
could be unnecessarily cascaded on the save/update cascade<a class="changeset-link headerlink reference internal" href="#change-47d47dccb2480566207c5fe438fcf435">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-4"><span class="target" id="change-d1b12f9efbb4d033df0a742d87c94ec6"></span>various speedups in attributes module<a class="changeset-link headerlink reference internal" href="#change-d1b12f9efbb4d033df0a742d87c94ec6">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-5"><span class="target" id="change-3c38a41db88ddb08db4d6f9d55194829"></span>identity map in Session is by default <em>no longer weak referencing</em>.
to have it be weak referencing, use create_session(weak_identity_map=True)
fixes<a class="changeset-link headerlink reference internal" href="#change-3c38a41db88ddb08db4d6f9d55194829">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/388">#388</a></p>
</p>
</li>
<li><p id="change-0.3.2-6"><span class="target" id="change-79647e60f1175354aca8ce75bc921e74"></span>MySQL detects errors 2006 (server has gone away) and 2014
(commands out of sync) and invalidates the connection on which it occurred.<a class="changeset-link headerlink reference internal" href="#change-79647e60f1175354aca8ce75bc921e74">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-7"><span class="target" id="change-35fdc30fd93b0c3e1b37402908f76fd2"></span>MySQL bool type fix:<a class="changeset-link headerlink reference internal" href="#change-35fdc30fd93b0c3e1b37402908f76fd2">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/307">#307</a></p>
</p>
</li>
<li><p id="change-0.3.2-8"><span class="target" id="change-1ee7b209987629c6f339a0dcc1d703a0"></span>postgres reflection fixes:<a class="changeset-link headerlink reference internal" href="#change-1ee7b209987629c6f339a0dcc1d703a0">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/382">#382</a>, <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/349">#349</a></p>
</p>
</li>
<li><p id="change-0.3.2-9"><span class="target" id="change-fd7e2e948165b16a849ce49011d87d21"></span>added keywords for EXCEPT, INTERSECT, EXCEPT ALL, INTERSECT ALL<a class="changeset-link headerlink reference internal" href="#change-fd7e2e948165b16a849ce49011d87d21">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/247">#247</a></p>
</p>
</li>
<li><p id="change-0.3.2-10"><span class="target" id="change-c52f4bfa0a28896df33156b19ff3ca89"></span>assign_mapper in assignmapper extension returns the created mapper<a class="changeset-link headerlink reference internal" href="#change-c52f4bfa0a28896df33156b19ff3ca89">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/2110">#2110</a></p>
</p>
</li>
<li><p id="change-0.3.2-11"><span class="target" id="change-f6551d6f54899ff8108cbbbd26e5018c"></span>added label() function to Select class, when scalar=True is used
to create a scalar subquery
i.e. &#8220;select x, y, (select max(foo) from table) AS foomax from table&#8221;<a class="changeset-link headerlink reference internal" href="#change-f6551d6f54899ff8108cbbbd26e5018c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-12"><span class="target" id="change-9f53e9bcf5cece6ce6d03fb58eda20ad"></span>added onupdate and ondelete keyword arguments to ForeignKey; propagate
to underlying ForeignKeyConstraint if present.  (don&#8217;t propagate in the
other direction, however)<a class="changeset-link headerlink reference internal" href="#change-9f53e9bcf5cece6ce6d03fb58eda20ad">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-13"><span class="target" id="change-8372c4057499c22e46cf0bcc739b695d"></span>fix to session.update() to preserve &#8220;dirty&#8221; status of incoming object<a class="changeset-link headerlink reference internal" href="#change-8372c4057499c22e46cf0bcc739b695d">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-14"><span class="target" id="change-a1e2bb60c3cd464a48cdfbff5d33f9c2"></span>sending a selectable to an IN via the in_() function no longer creates
a &#8220;union&#8221; out of multiple selects; only one selectable to a the in_() function
is allowed now (make a union yourself if union is needed)<a class="changeset-link headerlink reference internal" href="#change-a1e2bb60c3cd464a48cdfbff5d33f9c2">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-15"><span class="target" id="change-e009ef228c4e1a8a3e92bc728fbc438a"></span>improved support for disabling save-update cascade via cascade=&#8221;none&#8221; etc.<a class="changeset-link headerlink reference internal" href="#change-e009ef228c4e1a8a3e92bc728fbc438a">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.2-16"><span class="target" id="change-dcd5c21c1c376d26e9907a451ceb1ad7"></span>added &#8220;remote_side&#8221; argument to relation(), used only with self-referential
mappers to force the direction of the parent/child relationship.  replaces
the usage of the &#8220;foreignkey&#8221; parameter for &#8220;switching&#8221; the direction.
&#8220;foreignkey&#8221; argument is deprecated for all uses and will eventually
be replaced by an argument dedicated to ForeignKey specification on mappers.<a class="changeset-link headerlink reference internal" href="#change-dcd5c21c1c376d26e9907a451ceb1ad7">¶</a><p></p>
</p>
</li>
</ul>
</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">¶</a></h2>
Released: Mon Nov 13 2006<div class="section" id="change-0.3.1-orm">
<h3>orm<a class="headerlink" href="#change-0.3.1-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.1-0"><span class="target" id="change-0af98bf52dddbf728106569a225ffa27"><strong>[orm] </strong></span>the &#8220;delete&#8221; cascade will load in all child objects, if they were not
loaded already.  this can be turned off (i.e. the old behavior) by setting
passive_deletes=True on a relation().<a class="changeset-link headerlink reference internal" href="#change-0af98bf52dddbf728106569a225ffa27">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-1"><span class="target" id="change-a23f03ece2ae82e1264ecacd54d01e12"><strong>[orm] </strong></span>adjustments to reworked eager query generation to not fail on circular
eager-loaded relationships (like backrefs)<a class="changeset-link headerlink reference internal" href="#change-a23f03ece2ae82e1264ecacd54d01e12">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-2"><span class="target" id="change-201da868406f1523d1d4d0051049fbb3"><strong>[orm] </strong></span>fixed bug where eagerload() (nor lazyload()) option didn&#8217;t properly
instruct the Query whether or not to use &#8220;nesting&#8221; when producing a
LIMIT query.<a class="changeset-link headerlink reference internal" href="#change-201da868406f1523d1d4d0051049fbb3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-3"><span class="target" id="change-ed4601755ccc028c0cda37fd8bc2343f"><strong>[orm] </strong></span>fixed bug in circular dependency sorting at flush time; if object A
contained a cyclical many-to-one relationship to object B, and object B
was just attached to object A, <em>but</em> object B itself wasn&#8217;t changed,
the many-to-one synchronize of B&#8217;s primary key attribute to A&#8217;s foreign key
attribute wouldn&#8217;t occur.<a class="changeset-link headerlink reference internal" href="#change-ed4601755ccc028c0cda37fd8bc2343f">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/360">#360</a></p>
</p>
</li>
<li><p id="change-0.3.1-4"><span class="target" id="change-443db0da68194af1c486a31424626acc"><strong>[orm] </strong></span>implemented from_obj argument for query.count, improves count function
on selectresults<a class="changeset-link headerlink reference internal" href="#change-443db0da68194af1c486a31424626acc">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/325">#325</a></p>
</p>
</li>
<li><p id="change-0.3.1-5"><span class="target" id="change-6c3fe5348af079926eefaa5fe198132a"><strong>[orm] </strong></span>added an assertion within the &#8220;cascade&#8221; step of ORM relationships to check
that the class of object attached to a parent object is appropriate
(i.e. if A.items stores B objects, raise an error if a C is appended to A.items)<a class="changeset-link headerlink reference internal" href="#change-6c3fe5348af079926eefaa5fe198132a">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-6"><span class="target" id="change-3c54016dd3eb6240c61bdf6630fb6ba2"><strong>[orm] </strong></span>new extension sqlalchemy.ext.associationproxy, provides transparent
&#8220;association object&#8221; mappings.  new example
examples/association/proxied_association.py illustrates.<a class="changeset-link headerlink reference internal" href="#change-3c54016dd3eb6240c61bdf6630fb6ba2">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-7"><span class="target" id="change-2352347ba67e763e63b5ab5fee615fd0"><strong>[orm] </strong></span>improvement to single table inheritance to load full hierarchies beneath
the target class<a class="changeset-link headerlink reference internal" href="#change-2352347ba67e763e63b5ab5fee615fd0">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-8"><span class="target" id="change-7c2c83368bc653695d50bf41a32ba122"><strong>[orm] </strong></span>fix to subtle condition in topological sort where a node could appear twice,
for<a class="changeset-link headerlink reference internal" href="#change-7c2c83368bc653695d50bf41a32ba122">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/362">#362</a></p>
</p>
</li>
<li><p id="change-0.3.1-9"><span class="target" id="change-21099b0b4cfd087d7544c0d5b29f20ad"><strong>[orm] </strong></span>additional rework to topological sort, refactoring, for<a class="changeset-link headerlink reference internal" href="#change-21099b0b4cfd087d7544c0d5b29f20ad">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/365">#365</a></p>
</p>
</li>
<li><p id="change-0.3.1-10"><span class="target" id="change-c31972da5ddfab970d95b975b0de0f13"><strong>[orm] </strong></span>&#8220;delete-orphan&#8221; for a certain type can be set on more than one parent class;
the instance is an &#8220;orphan&#8221; only if its not attached to <em>any</em> of those parents<a class="changeset-link headerlink reference internal" href="#change-c31972da5ddfab970d95b975b0de0f13">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.1-misc">
<h3>misc<a class="headerlink" href="#change-0.3.1-misc" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.1-11"><span class="target" id="change-ae1c652969370d12b5391b3c25bc311b"><strong>[engine/pool] </strong></span>some new Pool utility classes, updated docs<a class="changeset-link headerlink reference internal" href="#change-ae1c652969370d12b5391b3c25bc311b">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-12"><span class="target" id="change-40bd8ced1a542293a3bee2e4e993b319"><strong>[engine/pool] </strong></span>&#8220;use_threadlocal&#8221; on Pool defaults to False (same as create_engine)<a class="changeset-link headerlink reference internal" href="#change-40bd8ced1a542293a3bee2e4e993b319">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-13"><span class="target" id="change-d05d5b0d7cbdb72d11dda30dba80e253"><strong>[engine/pool] </strong></span>fixed direct execution of Compiled objects<a class="changeset-link headerlink reference internal" href="#change-d05d5b0d7cbdb72d11dda30dba80e253">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-14"><span class="target" id="change-c6dec82e7a9a007a628f587642c8adc7"><strong>[engine/pool] </strong></span>create_engine() reworked to be strict about incoming **kwargs.  all keyword
arguments must be consumed by one of the dialect, connection pool, and engine
constructors, else a TypeError is thrown which describes the full set of
invalid kwargs in relation to the selected dialect/pool/engine configuration.<a class="changeset-link headerlink reference internal" href="#change-c6dec82e7a9a007a628f587642c8adc7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-15"><span class="target" id="change-95a6b3fd67d1f8a92d5fc7d3c4a72cd3"><strong>[databases/types] </strong></span>MySQL catches exception on &#8220;describe&#8221; and reports as NoSuchTableError<a class="changeset-link headerlink reference internal" href="#change-95a6b3fd67d1f8a92d5fc7d3c4a72cd3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-16"><span class="target" id="change-01a55d6e648e86ae237b8c9014765637"><strong>[databases/types] </strong></span>further fixes to sqlite booleans, weren&#8217;t working as defaults<a class="changeset-link headerlink reference internal" href="#change-01a55d6e648e86ae237b8c9014765637">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.1-17"><span class="target" id="change-4990b03a3ffa7973be6eaf89b54a64c2"><strong>[databases/types] </strong></span>fix to postgres sequence quoting when using schemas<a class="changeset-link headerlink reference internal" href="#change-4990b03a3ffa7973be6eaf89b54a64c2">¶</a><p></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">¶</a></h2>
Released: Sun Oct 22 2006<div class="section" id="change-0.3.0-general">
<h3>general<a class="headerlink" href="#change-0.3.0-general" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-0"><span class="target" id="change-af1703046aac222edc8054620ba72d5b"><strong>[general] </strong></span>logging is now implemented via standard python &#8220;logging&#8221; module.
&#8220;echo&#8221; keyword parameters are still functional but set/unset
log levels for their respective classes/instances.  all logging
can be controlled directly through the Python API by setting
INFO and DEBUG levels for loggers in the &#8220;sqlalchemy&#8221; namespace.
class-level logging is under &#8220;sqlalchemy.&lt;module&gt;.&lt;classname&gt;&#8221;,
instance-level logging under &#8220;sqlalchemy.&lt;module&gt;.&lt;classname&gt;.0x..&lt;00-FF&gt;&#8221;.
Test suite includes &#8220;&#8211;log-info&#8221; and &#8220;&#8211;log-debug&#8221; arguments
which work independently of &#8211;verbose/&#8211;quiet.  Logging added
to orm to allow tracking of mapper configurations, row iteration.<a class="changeset-link headerlink reference internal" href="#change-af1703046aac222edc8054620ba72d5b">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-1"><span class="target" id="change-5becb5a90dce00b288e48c42b5b11c91"><strong>[general] </strong></span>the documentation-generation system has been overhauled to be
much simpler in design and more integrated with Markdown<a class="changeset-link headerlink reference internal" href="#change-5becb5a90dce00b288e48c42b5b11c91">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.0-orm">
<h3>orm<a class="headerlink" href="#change-0.3.0-orm" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-2"><span class="target" id="change-4d0f18a84af312791a640dd1de2ac5aa"><strong>[orm] </strong></span>attribute tracking modified to be more intelligent about detecting
changes, particularly with mutable types.  TypeEngine objects now
take a greater role in defining how to compare two scalar instances,
including the addition of a MutableType mixin which is implemented by
PickleType.  unit-of-work now tracks the &#8220;dirty&#8221; list as an expression
of all persistent objects where the attribute manager detects changes.
The basic issue that&#8217;s fixed is detecting changes on PickleType
objects, but also generalizes type handling and &#8220;modified&#8221; object
checking to be more complete and extensible.<a class="changeset-link headerlink reference internal" href="#change-4d0f18a84af312791a640dd1de2ac5aa">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-3"><span class="target" id="change-b455e30f2020397a52b52dee6104b5c3"><strong>[orm] </strong></span>a wide refactoring to &#8220;attribute loader&#8221; and &#8220;options&#8221; architectures.
ColumnProperty and PropertyLoader define their loading behaivor via switchable
&#8220;strategies&#8221;, and MapperOptions no longer use mapper/property copying
in order to function; they are instead propagated via QueryContext
and SelectionContext objects at query/instances time.
All of the internal copying of mappers and properties that was used to handle
inheritance as well as options() has been removed; the structure
of mappers and properties is much simpler than before and is clearly laid out
in the new &#8216;interfaces&#8217; module.<a class="changeset-link headerlink reference internal" href="#change-b455e30f2020397a52b52dee6104b5c3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-4"><span class="target" id="change-1119b49161e5498c6ab5268241c9bc68"><strong>[orm] </strong></span>related to the mapper/property overhaul, internal refactoring to
mapper instances() method to use a SelectionContext object to track
state during the operation.
SLIGHT API BREAKAGE: the append_result() and populate_instances()
methods on MapperExtension have a slightly different method signature
now as a result of the change; hoping that these methods are not
in widespread use as of yet.<a class="changeset-link headerlink reference internal" href="#change-1119b49161e5498c6ab5268241c9bc68">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-5"><span class="target" id="change-b9edae4ebe585fc03a2663daead0be3c"><strong>[orm] </strong></span>instances() method moved to Query now, backwards-compatible
version remains on Mapper.<a class="changeset-link headerlink reference internal" href="#change-b9edae4ebe585fc03a2663daead0be3c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-6"><span class="target" id="change-35f311fe6deb6c511ce9e34f3aba4864"><strong>[orm] </strong></span>added contains_eager() MapperOption, used in conjunction with
instances() to specify properties that should be eagerly loaded
from the result set, using their plain column names by default, or translated
given an custom row-translation function.<a class="changeset-link headerlink reference internal" href="#change-35f311fe6deb6c511ce9e34f3aba4864">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-7"><span class="target" id="change-50bbbc3588a69af8445ccb96ccd2e5ce"><strong>[orm] </strong></span>more rearrangements of unit-of-work commit scheme to better allow
dependencies within circular flushes to work properly...updated
task traversal/logging implementation<a class="changeset-link headerlink reference internal" href="#change-50bbbc3588a69af8445ccb96ccd2e5ce">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-8"><span class="target" id="change-cc6b22ffd1c978ed11157bf9e14e6394"><strong>[orm] </strong></span>polymorphic mappers (i.e. using inheritance) now produces INSERT
statements in order of tables across all inherited classes<a class="changeset-link headerlink reference internal" href="#change-cc6b22ffd1c978ed11157bf9e14e6394">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/321">#321</a></p>
</p>
</li>
<li><p id="change-0.3.0-9"><span class="target" id="change-69a48fb25de0e1cd620693a836968e3d"><strong>[orm] </strong></span>added an automatic &#8220;row switch&#8221; feature to mapping, which will
detect a pending instance/deleted instance pair with the same
identity key and convert the INSERT/DELETE to a single UPDATE<a class="changeset-link headerlink reference internal" href="#change-69a48fb25de0e1cd620693a836968e3d">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-10"><span class="target" id="change-9741ba8323c434593dbd85ae32233bba"><strong>[orm] </strong></span>&#8220;association&#8221; mappings simplified to take advantage of
automatic &#8220;row switch&#8221; feature<a class="changeset-link headerlink reference internal" href="#change-9741ba8323c434593dbd85ae32233bba">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-11"><span class="target" id="change-f970db37c47df342ea626e5d34c33557"><strong>[orm] </strong></span>&#8220;custom list classes&#8221; is now implemented via the &#8220;collection_class&#8221;
keyword argument to relation().  the old way still works but is
deprecated<a class="changeset-link headerlink reference internal" href="#change-f970db37c47df342ea626e5d34c33557">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/212">#212</a></p>
</p>
</li>
<li><p id="change-0.3.0-12"><span class="target" id="change-0b4f7934178b19d2f4198f972fa48af0"><strong>[orm] </strong></span>added &#8220;viewonly&#8221; flag to relation(), allows construction of
relations that have no effect on the flush() process.<a class="changeset-link headerlink reference internal" href="#change-0b4f7934178b19d2f4198f972fa48af0">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-13"><span class="target" id="change-89e8bd4b5f78c821a2184eda9d0b4596"><strong>[orm] </strong></span>added &#8220;lockmode&#8221; argument to base Query select/get functions,
including &#8220;with_lockmode&#8221; function to get a Query copy that has
a default locking mode.  Will translate &#8220;read&#8221;/&#8221;update&#8221;
arguments into a for_update argument on the select side.<a class="changeset-link headerlink reference internal" href="#change-89e8bd4b5f78c821a2184eda9d0b4596">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/292">#292</a></p>
</p>
</li>
<li><p id="change-0.3.0-14"><span class="target" id="change-0e58e5ab6f48202b49a15d78dac03244"><strong>[orm] </strong></span>implemented &#8220;version check&#8221; logic in Query/Mapper, used
when version_id_col is in effect and query.with_lockmode()
is used to get() an instance that&#8217;s already loaded<a class="changeset-link headerlink reference internal" href="#change-0e58e5ab6f48202b49a15d78dac03244">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-15"><span class="target" id="change-db567762bd8f003f9bf446dc80e93356"><strong>[orm] </strong></span>post_update behavior improved; does a better job at not
updating too many rows, updates only required columns<a class="changeset-link headerlink reference internal" href="#change-db567762bd8f003f9bf446dc80e93356">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/208">#208</a></p>
</p>
</li>
<li><p id="change-0.3.0-16"><span class="target" id="change-ed17766eeb0f7e0ffae4b5a8d65e19ba"><strong>[orm] </strong></span>adjustments to eager loading so that its &#8220;eager chain&#8221; is
kept separate from the normal mapper setup, thereby
preventing conflicts with lazy loader operation, fixes<a class="changeset-link headerlink reference internal" href="#change-ed17766eeb0f7e0ffae4b5a8d65e19ba">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/308">#308</a></p>
</p>
</li>
<li><p id="change-0.3.0-17"><span class="target" id="change-49870ec4b2e0423340358dea26b3babf"><strong>[orm] </strong></span>fix to deferred group loading<a class="changeset-link headerlink reference internal" href="#change-49870ec4b2e0423340358dea26b3babf">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-18"><span class="target" id="change-9b6964ae2926bcd79206eacf3b9f3cfd"><strong>[orm] </strong></span>session.flush() wont close a connection it opened<a class="changeset-link headerlink reference internal" href="#change-9b6964ae2926bcd79206eacf3b9f3cfd">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/346">#346</a></p>
</p>
</li>
<li><p id="change-0.3.0-19"><span class="target" id="change-805e0f356e88803a0f83d386731283b0"><strong>[orm] </strong></span>added &#8220;batch=True&#8221; flag to mapper; if False, save_obj
will fully save one object at a time including calls
to before_XXXX and after_XXXX<a class="changeset-link headerlink reference internal" href="#change-805e0f356e88803a0f83d386731283b0">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-20"><span class="target" id="change-f2876d14278453a3a9e07c35b3fc23d6"><strong>[orm] </strong></span>added &#8220;column_prefix=None&#8221; argument to mapper; prepends the
given string (typically &#8216;_&#8217;) to column-based attributes automatically
set up from the mapper&#8217;s Table<a class="changeset-link headerlink reference internal" href="#change-f2876d14278453a3a9e07c35b3fc23d6">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-21"><span class="target" id="change-84a0aa83db4fbe7fa685c9586be1c4ec"><strong>[orm] </strong></span>specifying joins in the from_obj argument of query.select() will
replace the main table of the query, if the table is somewhere within
the given from_obj.  this makes it possible to produce custom joins and
outerjoins in queries without the main table getting added twice.<a class="changeset-link headerlink reference internal" href="#change-84a0aa83db4fbe7fa685c9586be1c4ec">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/315">#315</a></p>
</p>
</li>
<li><p id="change-0.3.0-22"><span class="target" id="change-ccb145193bd44d06f18079179309f197"><strong>[orm] </strong></span>eagerloading is adjusted to more thoughtfully attach its LEFT OUTER JOINs
to the given query, looking for custom &#8220;FROM&#8221; clauses that may have
already been set up.<a class="changeset-link headerlink reference internal" href="#change-ccb145193bd44d06f18079179309f197">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-23"><span class="target" id="change-63a7d34aabebf51b4547b9939aee9ea7"><strong>[orm] </strong></span>added join_to and outerjoin_to transformative methods to SelectResults,
to build up join/outerjoin conditions based on property names. also
added select_from to explicitly set from_obj parameter.<a class="changeset-link headerlink reference internal" href="#change-63a7d34aabebf51b4547b9939aee9ea7">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-24"><span class="target" id="change-c1c88b8cfd3e533c3299e6380b4c2363"><strong>[orm] </strong></span>removed &#8220;is_primary&#8221; flag from mapper.<a class="changeset-link headerlink reference internal" href="#change-c1c88b8cfd3e533c3299e6380b4c2363">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.0-sql">
<h3>sql<a class="headerlink" href="#change-0.3.0-sql" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-25"><span class="target" id="change-e5f40f680103943b465258a215ef6f9e"><strong>[sql] [construction] </strong></span>changed &#8220;for_update&#8221; parameter to accept False/True/&#8221;nowait&#8221;
and &#8220;read&#8221;, the latter two of which are interpreted only by
Oracle and Mysql<a class="changeset-link headerlink reference internal" href="#change-e5f40f680103943b465258a215ef6f9e">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/292">#292</a></p>
</p>
</li>
<li><p id="change-0.3.0-26"><span class="target" id="change-3abbda64974ee3c2264a57b840bd8421"><strong>[sql] [construction] </strong></span>added extract() function to sql dialect
(SELECT extract(field FROM expr))<a class="changeset-link headerlink reference internal" href="#change-3abbda64974ee3c2264a57b840bd8421">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-27"><span class="target" id="change-121c9f650291edb4ca7b8ffa8139c66b"><strong>[sql] [construction] </strong></span>BooleanExpression includes new &#8220;negate&#8221; argument to specify
the appropriate negation operator if one is available.<a class="changeset-link headerlink reference internal" href="#change-121c9f650291edb4ca7b8ffa8139c66b">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-28"><span class="target" id="change-9350ceaebf6175edafc4765a8f79bd9b"><strong>[sql] [construction] </strong></span>calling a negation on an &#8220;IN&#8221; or &#8220;IS&#8221; clause will result in
&#8220;NOT IN&#8221;, &#8220;IS NOT&#8221; (as opposed to NOT (x IN y)).<a class="changeset-link headerlink reference internal" href="#change-9350ceaebf6175edafc4765a8f79bd9b">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-29"><span class="target" id="change-22c4e15de46bb1d96abbdf555f8dc4a7"><strong>[sql] [construction] </strong></span>Function objects know what to do in a FROM clause now.  their
behavior should be the same, except now you can also do things like
select([&#8216;*&#8217;], from_obj=[func.my_function()]) to get multiple
columns from the result, or even use sql.column() constructs to name the
return columns<a class="changeset-link headerlink reference internal" href="#change-22c4e15de46bb1d96abbdf555f8dc4a7">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/172">#172</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.0-schema">
<h3>schema<a class="headerlink" href="#change-0.3.0-schema" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-30"><span class="target" id="change-4df510b9c3361af772c20d1ad5825ea4"><strong>[schema] </strong></span>a fair amount of cleanup to the schema package, removal of ambiguous
methods, methods that are no longer needed.  slightly more constrained
usage, greater emphasis on explicitness<a class="changeset-link headerlink reference internal" href="#change-4df510b9c3361af772c20d1ad5825ea4">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-31"><span class="target" id="change-7e3d79a0f25e4a5cfff24316d2cf0887"><strong>[schema] </strong></span>the &#8220;primary_key&#8221; attribute of Table and other selectables becomes
a setlike ColumnCollection object; is ordered but not numerically
indexed.  a comparison clause between two pks that are derived from the
same underlying tables (i.e. such as two Alias objects) can be generated
via table1.primary_key==table2.primary_key<a class="changeset-link headerlink reference internal" href="#change-7e3d79a0f25e4a5cfff24316d2cf0887">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-32"><span class="target" id="change-1f5f61d9a455f45e8e7957b4a802259c"><strong>[schema] </strong></span>ForeignKey(Constraint) supports &#8220;use_alter=True&#8221;, to create/drop a foreign key
via ALTER.  this allows circular foreign key relationships to be set up.<a class="changeset-link headerlink reference internal" href="#change-1f5f61d9a455f45e8e7957b4a802259c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-33"><span class="target" id="change-07dabb3b17789490c2f1f3c1325d7f94"><strong>[schema] </strong></span>append_item() methods removed from Table and Column; preferably
construct Table/Column/related objects inline, but if needed use
append_column(), append_foreign_key(), append_constraint(), etc.<a class="changeset-link headerlink reference internal" href="#change-07dabb3b17789490c2f1f3c1325d7f94">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-34"><span class="target" id="change-9297cc5781aef837ddcf8a66d489adac"><strong>[schema] </strong></span>table.create() no longer returns the Table object, instead has no
return value.  the usual case is that tables are created via metadata,
which is preferable since it will handle table dependencies.<a class="changeset-link headerlink reference internal" href="#change-9297cc5781aef837ddcf8a66d489adac">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-35"><span class="target" id="change-96cef28bc60b163b11d7748202f7927d"><strong>[schema] </strong></span>added UniqueConstraint (goes at Table level), CheckConstraint
(goes at Table or Column level).<a class="changeset-link headerlink reference internal" href="#change-96cef28bc60b163b11d7748202f7927d">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-36"><span class="target" id="change-f11c7c40de054e42f985d34823335728"><strong>[schema] </strong></span>index=False/unique=True on Column now creates a UniqueConstraint,
index=True/unique=False creates a plain Index,
index=True/unique=True on Column creates a unique Index.  &#8216;index&#8217;
and &#8216;unique&#8217; keyword arguments to column are now boolean only; for
explcit names and groupings of indexes or unique constraints, use the
UniqueConstraint/Index constructs explicitly.<a class="changeset-link headerlink reference internal" href="#change-f11c7c40de054e42f985d34823335728">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-37"><span class="target" id="change-504cbc530860d0c4286f50b29cc1df63"><strong>[schema] </strong></span>added autoincrement=True to Column; will disable schema generation
of SERIAL/AUTO_INCREMENT/identity seq for postgres/mysql/mssql if
explicitly set to False<a class="changeset-link headerlink reference internal" href="#change-504cbc530860d0c4286f50b29cc1df63">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-38"><span class="target" id="change-c835aa697ef27bc1779955d5c07a05f1"><strong>[schema] </strong></span>TypeEngine objects now have methods to deal with copying and comparing
values of their specific type.  Currently used by the ORM, see below.<a class="changeset-link headerlink reference internal" href="#change-c835aa697ef27bc1779955d5c07a05f1">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-39"><span class="target" id="change-935239bc03f9354863c60df9010bef03"><strong>[schema] </strong></span>fixed condition that occurred during reflection when a primary key
column was explciitly overridden, where the PrimaryKeyConstraint would
get both the reflected and the programmatic column doubled up<a class="changeset-link headerlink reference internal" href="#change-935239bc03f9354863c60df9010bef03">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-40"><span class="target" id="change-fed9bf9740d5a682cebb46515151e5c0"><strong>[schema] </strong></span>the &#8220;foreign_key&#8221; attribute on Column and ColumnElement in general
is deprecated, in favor of the &#8220;foreign_keys&#8221; list/set-based attribute,
which takes into account multiple foreign keys on one column.
&#8220;foreign_key&#8221; will return the first element in the &#8220;foreign_keys&#8221; list/set
or None if the list is empty.<a class="changeset-link headerlink reference internal" href="#change-fed9bf9740d5a682cebb46515151e5c0">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.0-sqlite">
<h3>sqlite<a class="headerlink" href="#change-0.3.0-sqlite" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-41"><span class="target" id="change-73aea24b040bca4e9965ccbb6e349046"><strong>[sqlite] </strong></span>sqlite boolean datatype converts False/True to 0/1 by default<a class="changeset-link headerlink reference internal" href="#change-73aea24b040bca4e9965ccbb6e349046">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-42"><span class="target" id="change-2f2f6303c04b763ae32a23ad61552cf4"><strong>[sqlite] </strong></span>fixes to Date/Time (SLDate/SLTime) types; works as good as postgres
now<a class="changeset-link headerlink reference internal" href="#change-2f2f6303c04b763ae32a23ad61552cf4">¶</a><p>References: <a class="reference external" href="http://www.sqlalchemy.org/trac/ticket/335">#335</a></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.0-oracle">
<h3>oracle<a class="headerlink" href="#change-0.3.0-oracle" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-43"><span class="target" id="change-2a9e63a93ef8e8feadccbfb766be4727"><strong>[oracle] </strong></span>Oracle has experimental support for cx_Oracle.TIMESTAMP, which requires
a setinputsizes() call on the cursor that is now enabled via the
&#8216;auto_setinputsizes&#8217; flag to the oracle dialect.<a class="changeset-link headerlink reference internal" href="#change-2a9e63a93ef8e8feadccbfb766be4727">¶</a><p></p>
</p>
</li>
</ul>
</div>
<div class="section" id="change-0.3.0-firebird">
<h3>firebird<a class="headerlink" href="#change-0.3.0-firebird" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-44"><span class="target" id="change-a1b63a91c9fe5f9b5cae296b49617e99"><strong>[firebird] </strong></span>aliases do not use &#8220;AS&#8221;<a class="changeset-link headerlink reference internal" href="#change-a1b63a91c9fe5f9b5cae296b49617e99">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-45"><span class="target" id="change-d6929c3d1968bd8c70fc395ea5abac4e"><strong>[firebird] </strong></span>correctly raises NoSuchTableError when reflecting non-existent table<a class="changeset-link headerlink reference internal" href="#change-d6929c3d1968bd8c70fc395ea5abac4e">¶</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">¶</a></h3>
<ul class="simple">
<li><p id="change-0.3.0-46"><span class="target" id="change-fce7c38172fd247996365a12bbad8a3c"><strong>[ms-sql] </strong></span>fixes bug 261 (table reflection broken for MS-SQL case-sensitive
databases)<a class="changeset-link headerlink reference internal" href="#change-fce7c38172fd247996365a12bbad8a3c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-47"><span class="target" id="change-5c03c1b73b7683cc5c95d8f6dcbff900"><strong>[ms-sql] </strong></span>can now specify port for pymssql<a class="changeset-link headerlink reference internal" href="#change-5c03c1b73b7683cc5c95d8f6dcbff900">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-48"><span class="target" id="change-d61a87077e1d1c9fa96868d8e8805a87"><strong>[ms-sql] </strong></span>introduces new &#8220;auto_identity_insert&#8221; option for auto-switching
between &#8220;SET IDENTITY_INSERT&#8221; mode when values specified for IDENTITY columns<a class="changeset-link headerlink reference internal" href="#change-d61a87077e1d1c9fa96868d8e8805a87">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-49"><span class="target" id="change-b7bc176c6d0fced17db9766f866ca8d9"><strong>[ms-sql] </strong></span>now supports multi-column foreign keys<a class="changeset-link headerlink reference internal" href="#change-b7bc176c6d0fced17db9766f866ca8d9">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-50"><span class="target" id="change-f2463d5087105bc305f2098f3a932ea4"><strong>[ms-sql] </strong></span>fix to reflecting date/datetime columns<a class="changeset-link headerlink reference internal" href="#change-f2463d5087105bc305f2098f3a932ea4">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-51"><span class="target" id="change-b0212da21088f78c1fb2b5c69f08802a"><strong>[ms-sql] </strong></span>NCHAR and NVARCHAR type support added<a class="changeset-link headerlink reference internal" href="#change-b0212da21088f78c1fb2b5c69f08802a">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-52"><span class="target" id="change-784d08fb847e35d6d1df60cc5b77a74c"><strong>[connections/pooling/execution] </strong></span>connection pool tracks open cursors and automatically closes them
if connection is returned to pool with cursors still opened.  Can be
affected by options which cause it to raise an error instead, or to
do nothing.  fixes issues with MySQL, others<a class="changeset-link headerlink reference internal" href="#change-784d08fb847e35d6d1df60cc5b77a74c">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-53"><span class="target" id="change-f6cf03213eb3b88352eb7887cc9cfe0e"><strong>[connections/pooling/execution] </strong></span>fixed bug where Connection wouldn&#8217;t lose its Transaction
after commit/rollback<a class="changeset-link headerlink reference internal" href="#change-f6cf03213eb3b88352eb7887cc9cfe0e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-54"><span class="target" id="change-f646180e65ac4eacb62bc3ff6b69286e"><strong>[connections/pooling/execution] </strong></span>added scalar() method to ComposedSQLEngine, ResultProxy<a class="changeset-link headerlink reference internal" href="#change-f646180e65ac4eacb62bc3ff6b69286e">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-55"><span class="target" id="change-1753263c929a352b09f567f6469bcbe3"><strong>[connections/pooling/execution] </strong></span>ResultProxy will close() the underlying cursor when the ResultProxy
itself is closed.  this will auto-close cursors for ResultProxy objects
that have had all their rows fetched (or had scalar() called).<a class="changeset-link headerlink reference internal" href="#change-1753263c929a352b09f567f6469bcbe3">¶</a><p></p>
</p>
</li>
<li><p id="change-0.3.0-56"><span class="target" id="change-8b8beaee4be0988cd69dfbdb5a8603e0"><strong>[connections/pooling/execution] </strong></span>ResultProxy.fetchall() internally uses DBAPI fetchall() for better efficiency,
added to mapper iteration as well (courtesy Michael Twomey)<a class="changeset-link headerlink reference internal" href="#change-8b8beaee4be0988cd69dfbdb5a8603e0">¶</a><p></p>
</p>
</li>
</ul>
</div>
</div>
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