71 lines
3.9 KiB
HTML
71 lines
3.9 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Title" content="SQLPrepare and SQLNativeSQL escape sequences and scalar functions" />
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<meta name="abstract" content="ODBC has escape sequences and scalar functions that can be used to avoiding having to code directly to the syntax of a particular DBMS's version of SQL." />
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<meta name="description" content="ODBC has escape sequences and scalar functions that can be used to avoiding having to code directly to the syntax of a particular DBMS's version of SQL." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<title>SQLPrepare and SQLNativeSQL escape sequences and scalar functions</title>
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</head>
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<body id="escapescalar"><a name="escapescalar"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">SQLPrepare and SQLNativeSQL escape sequences and scalar functions</h1>
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<div><p>ODBC has escape sequences and scalar functions that can be used
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to avoiding having to code directly to the syntax of a particular DBMS's version
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of SQL.</p>
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<div class="section"><p>See Microsoft's ODBC specification on how to use escape sequences.
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The following ODBC escape sequences are supported by the <span class="keyword">iSeries™ Access for Windows<sup>®</sup></span> ODBC
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driver.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Escape sequences:</h4><ul><li>d</li>
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<li>t</li>
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<li>ts</li>
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<li>escape</li>
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<li>oj</li>
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<li>call</li>
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<li>?=call – This escape sequence should be used when trying to take advantage
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of the DB2<sup>®</sup> UDB
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for iSeries support
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for return values from a stored procedure. The parameter marker will need
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to be bound as an output parameter using the SQLBindParameter API. Note,
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at this time stored procedures can only return values of type integer.</li>
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<li>fn – This escape sequence is used when using the scalar functions below.
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The syntax is { fn scalar_function }.</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectiontitle">Scalar functions mapped by the ODBC driver to the DB2 UDB for iSeries SQL
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syntax:</h4><ul><li>length</li>
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<li>log</li>
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<li>database (Mapped on pre-V5R3 servers only)</li>
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<li>insert (Mapped on pre-V5R3 servers only)</li>
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<li>right (Mapped on pre-V5R3 servers only) </li>
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</ul>
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<div class="note"><span class="notetitle">Note:</span> All other scalar functions are supported natively in the DB2 UDB for iSeries SQL
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syntax, so no mapping is required.</div>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaikodbcapifunctions.htm" title="Learn about implementations issues when using ODBC APIs.">Implementation issues of ODBC APIs</a></div>
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</div>
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</div>
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</body>
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</html>
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