64 lines
3.9 KiB
HTML
64 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="Use indicator variables in RPG/400 applications that use SQL" />
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<meta name="abstract" content="An indicator variable is a two-byte integer." />
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<meta name="description" content="An indicator variable is a two-byte integer." />
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<meta name="DC.subject" content="indicator variable, RPG/400, RPG/400 program, indicator structure, coding requirement, indicator variable" />
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<meta name="keywords" content="indicator variable, RPG/400, RPG/400 program, indicator structure, coding requirement, indicator variable" />
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<meta name="DC.Relation" scheme="URI" content="rzajprpg.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzajpexampindicatorrpg.htm" />
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<meta name="DC.Relation" scheme="URI" content="../db2/rbafzmstch2refvar.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>Use indicator variables in RPG/400 applications that use SQL</title>
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</head>
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<body id="rzajpindicatorrpg"><a name="rzajpindicatorrpg"><!-- --></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">Use indicator variables in RPG/400<sup>®</sup> applications that use SQL</h1>
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<div><p>An indicator variable is a two-byte integer.</p>
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<div class="section"><p>See the entry for the SMALLINT SQL data type in <a href="rzajpequivsqlrpg.htm#rzajpequivsqlrpg__dtg">Table 1</a>.</p>
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</div>
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<div class="section"><p>An indicator structure can be defined by declaring the variable
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as an array with an element length of 4,0 and declaring the array name as
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a subfield of a data structure with B in position 43. On retrieval, an indicator
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variable is used to show whether its associated host variable has been assigned
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a null value. On assignment to a column, a negative indicator variable is
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used to indicate that a null value should be assigned.</p>
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</div>
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<div class="section"><p>Indicator variables are declared in the same way as host variables
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and the declarations of the two can be mixed in any way that seems appropriate
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to the programmer.</p>
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</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="rzajpexampindicatorrpg.htm">Example: Use indicator variables in RPG/400 applications that use SQL</a></strong><br />
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The following example shows declaring indicator variables in RPG.</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="rzajprpg.htm" title="The RPG/400 licensed program supports both RPG II and RPG III programs.">Code SQL statements in RPG/400 applications</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="../db2/rbafzmstch2refvar.htm">References to variables</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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