91 lines
7.6 KiB
HTML
91 lines
7.6 KiB
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<meta name="DC.Title" content="Code SQL statements in PL/I applications" />
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<meta name="abstract" content="This topic describes the unique application and coding requirements for embedding SQL statements in an iSeries PL/I program. Requirements for host structures and host variables are defined." />
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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>Code SQL statements in PL/I applications</title>
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</head>
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<body id="rzajpplone"><a name="rzajpplone"><!-- --></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">Code SQL statements in PL/I applications</h1>
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<div><p>This topic describes the unique application and coding requirements
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for embedding SQL statements in an <span class="keyword">iSeries™</span> PL/I
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program. Requirements for host structures and host variables are defined.</p>
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<div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzajpcodp.htm">Define the SQL communications area in PL/I applications that use SQL</a></strong><br />
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A PL/I program that contains SQL statements must include one or both of the following:</li>
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<li class="ulchildlink"><strong><a href="rzajpsqldapli.htm">Define SQL descriptor areas in PL/I applications that use SQL</a></strong><br />
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<span><img src="./delta.gif" alt="Start of change" />There are two types of SQL descriptor areas.
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One is defined with the ALLOCATE DESCRIPTOR statement. The other is defined
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using the SQLDA structure. In this section, only the SQLDA form is discussed.<img src="./deltaend.gif" alt="End of change" /></span></li>
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<li class="ulchildlink"><strong><a href="rzajpembedsqlpli.htm">Embed SQL statements in PL/I applications that use SQL</a></strong><br />
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The first statement of the PL/I program must be a PROCEDURE statement.</li>
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<li class="ulchildlink"><strong><a href="rzajphostvariablespli.htm">Use host variables in PL/I applications that use SQL</a></strong><br />
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All host variables used in SQL statements must be explicitly declared.</li>
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<li class="ulchildlink"><strong><a href="rzajphoststrucpli.htm">Use host structures in PL/I applications that use SQL</a></strong><br />
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In PL/I programs, you can define a <strong>host structure</strong>, which
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is a named set of elementary PL/I variables. A host structure name can be
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a group name whose subordinate levels name elementary PL/I variables.</li>
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<li class="ulchildlink"><strong><a href="rzajphostarraypli.htm">Use host structure arrays in PL/I applications that use SQL</a></strong><br />
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In PL/I programs, you can define a host structure array.</li>
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<li class="ulchildlink"><strong><a href="rzajppcticld.htm">Use external file descriptions in PL/I applications that use SQL</a></strong><br />
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You can use the PL/I %INCLUDE directive to include the definitions of externally described files in a source program.</li>
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<li class="ulchildlink"><strong><a href="rzajpequivsqlpli.htm">Determine equivalent SQL and PL/I data types</a></strong><br />
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The precompiler determines the base SQLTYPE and SQLLEN of host variables based on the following table.</li>
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<li class="ulchildlink"><strong><a href="rzajpindvp.htm">Use indicator variables in PL/I applications that use SQL</a></strong><br />
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An indicator variable is a two-byte integer (BIN FIXED(p), where p is 1 to 15).</li>
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<li class="ulchildlink"><strong><a href="rzajppliparm.htm">Differences in PL/I because of structure parameter passing techniques</a></strong><br />
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The PL/I precompiler attempts to use the structure parameter passing technique, if possible. This structure parameter passing technique provides better performance for most PL/I programs using SQL.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzajpkickoff.htm" title="This topic collection explains how to create database applications in host languages that use DB2 Universal Database for iSeries SQL statements and functions.">Embedded SQL programming</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzajpwritesqlapp.htm" title="You can create database applications in host languages that use DB2 UDB for iSeries SQL statements and functions.">Write applications that use SQL</a></div>
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<div><a href="rzajperrorandwarning.htm" title="The conditions described in the following topics could produce an error or warning message during an attempted compile process.">Error and warning messages during a compile of application programs that use SQL</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzajpsamprog.htm" title="This topic contains a sample application showing how to code SQL statements in each of the languages supported by the DB2 UDB for iSeries system.">Sample programs using DB2 UDB for iSeries statements</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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