61 lines
3.3 KiB
HTML
61 lines
3.3 KiB
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.Type" content="reference" />
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<meta name="DC.Title" content="SQL Statement Considerations" />
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<meta name="abstract" content="Identify SQL statement functions that are accomplished using ODBC." />
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<meta name="description" content="Identify SQL statement functions that are accomplished using ODBC." />
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<title>SQL Statement Considerations</title>
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<body id="rzaiksqlconsider"><a name="rzaiksqlconsider"><!-- --></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">SQL Statement Considerations</h1>
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<div><p>Identify SQL statement functions that are accomplished using ODBC.</p>
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<div class="section"><p>There are several SQL statements that are not recommended
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to be prepared and executed. Examples of these are:</p>
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<ul><li>SET™ TRANSACTION</li>
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<li>SET SCHEMA</li>
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<li>SET PATH</li>
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<li>COMMIT</li>
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<li>ROLLBACK</li>
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<li>CONNECT TO</li>
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<li>DISCONNECT ALL</li>
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</ul>
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<p>For these statements, you can accomplish the same behavior in other
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ways through ODBC. For example, if you turn off autocommit for the ODBC connection,
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you can use the SQLEndTran option instead of attempting to execute a COMMIT
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or ROLLBACK statement.</p>
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<p>Note that the SET SESSION AUTHORIZATION SQL statement changes
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the user that is in control of that connection which leads to unpredictable
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behavior when used in combination with ODBC connection pooling. The recommended
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way to use the SET SESSION AUTHORIZATION statement, through
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ODBC, is to free all open statement handles except for the SET SESSION
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AUTHORIZATION on which is it to run. Once SET SESSION AUTHORIZATION is run, you should
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free the statement handle. </p>
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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="odbcapis.htm" title="The following table lists ODBC 3.x APIs by their associated task and identifies considerations for each API.">ODBC 3.x APIs Notes</a></div>
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