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POPHP Zend_Db_Statement_DB2 returns null for static field
 

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    <p>I am building my SQL statement through a PHP API, and then passing it through a module that connects to our database (DB2).</p> <p>My issue: a <strong>static field</strong> (sales_type) is returning null when passing the SQL through a Zend_Db_Statement_DB2 module. Running the SQL directly on our AS400 (command line), it works properly. When I pass the same SQL through the DB2 module the "sales_type" field is null for all rows.</p> <p>A simplified version of the query:</p> <pre><code>SELECT 'discount' "sales_type", sum(sales_type1) "sales" FROM salesTable UNION SELECT 'promotion' "sales_type", sum(sales_type2) "sales" FROM salesTable </code></pre> <p>Expected/Desired results with fictiscious sales (what is also returned on command line):</p> <pre><code>sales_type sales discount 12345 promotion 6789 </code></pre> <p>Returned results when SQL passed through DB2 module:</p> <pre><code>sales_type sales null 12345 null 6789 </code></pre> <p>The PHP code used to execute <em>select queries</em> is listed below:</p> <pre><code> public static function ExecuteSelect($sql) { $adapter = new Zend_Db_Adapter_Db2(Zend_Registry::get('config')-&gt;resources-&gt;multidb-&gt;as400) //Prepare the SQL Statement $sqlStmt = new Zend_Db_Statement_DB2($adapter, $sql); $sqlStmt-&gt;execute(); $rows = $sqlStmt-&gt;fetchAll(); return $rows; } </code></pre> <p>Can anyone give me more insight as to the cause of this issue and how to fix it? Also, I'm not looking for a post-processing php work-around. Thanks in advance!</p>
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