56 lines
3.5 KiB
HTML
56 lines
3.5 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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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Parameter markers" />
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<meta name="abstract" content="Parameter markers act as place holders for values that are supplied by the program when you instruct the data source to run the SQL statement." />
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<meta name="description" content="Parameter markers act as place holders for values that are supplied by the program when you instruct the data source to run the SQL statement." />
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<meta name="DC.Relation" scheme="URI" content="rzaikodbcapiinfo.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="parmmarkers" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Parameter markers</title>
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</head>
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<body id="parmmarkers"><a name="parmmarkers"><!-- --></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">Parameter markers</h1>
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<div><p>Parameter markers act as place holders for values that are supplied
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by the program when you instruct the data source to run the SQL statement.</p>
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<div class="section"><p>When you use <strong>SQLPrepare</strong>, the statement that contains the
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parameter markers is passed to the data source to be prepared by the SQL <a href="rzaikoptimizer.htm#optimizer">Optimizer</a>. The Optimizer builds a plan
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of the statement and holds it for later reference. Each parameter marker must
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be associated with a program variable (strictly, a pointer to a program variable),
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and <strong>SQLBindParameter</strong> is used for this purpose.</p>
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</div>
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<div class="section"><p><strong>SQLBindParameter</strong> is a complex function. Careful study of
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the relevant section in the <cite>Microsoft<sup>®</sup> ODBC Software Development
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Kit and Programmer's Reference</cite> ISBN 1-57231-516-4 is strongly recommended.
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For most SQL statements, using <strong>SQLBindParameter</strong> provides input information
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to the function, but with stored procedures it also can receive data back.</p>
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</div>
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<div class="section"><p>After you have prepared the statement and bound the parameters,
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use <strong>SQLExecute</strong> to set to the data source the current values of the
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associated variables.</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="rzaikodbcapiinfo.htm" title="Identify the files required to build an ODBC application.">Files required to build an ODBC application</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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