Bug

• [DDC-1526] - Unecessary queries with LEFT JOIN
• [DDC-1561] - GH-239: Fix $qb->expr() PHPDoc @return type.
• [DDC-1589] - Use of mb_stripos in Composite.php
• [DDC-1594] - Merging serialized entity back to the UnitOfWork
• [DDC-1603] - Unique key name isn't correctly set
• [DDC-1618] - Query::Iterate() with fetch join exception but no associaiton selected
• [DDC-1619] - Missing QueryBuilder::distinct() method
• [DDC-1620] - Partial merge of PR261

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Release Notes - Doctrine 2 - ORM - Version 2.1.6 <h2> Bug </h2> <ul> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1526'>DDC-1526</a>] - Unecessary queries with LEFT JOIN </li> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1561'>DDC-1561</a>] - GH-239: Fix $qb-&gt;expr() PHPDoc @return type. </li> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1589'>DDC-1589</a>] - Use of mb_stripos in Composite.php </li> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1594'>DDC-1594</a>] - Merging serialized entity back to the UnitOfWork </li> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1603'>DDC-1603</a>] - Unique key name isn&#39;t correctly set </li> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1618'>DDC-1618</a>] - Query::Iterate() with fetch join exception but no associaiton selected </li> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1619'>DDC-1619</a>] - Missing QueryBuilder::distinct() method </li> <li>[<a href='http://www.doctrine-project.org/jira/browse/DDC-1620'>DDC-1620</a>] - Partial merge of PR261 </li> </ul>