60 lines
4.1 KiB
HTML
60 lines
4.1 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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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Use host variables in PL/I applications that use SQL" />
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<meta name="abstract" content="All host variables used in SQL statements must be explicitly declared." />
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<meta name="description" content="All host variables used in SQL statements must be explicitly declared." />
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<meta name="DC.subject" content="host variable, PL/I, PL/I program, coding requirement, requirement for PL/I program, BEGIN DECLARE SECTION statement, END DECLARE SECTION statement, BEGIN/END DECLARE SECTION, colon, in PL/I host variable, : (colon)" />
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<meta name="DC.Relation" scheme="URI" content="rzajpdeclarehostpli.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>Use host variables in PL/I applications that use SQL</title>
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</head>
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<body id="rzajphostvariablespli"><a name="rzajphostvariablespli"><!-- --></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 host variables in PL/I applications that use SQL</h1>
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<div><p>All host variables used in SQL statements must be explicitly declared.</p>
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<p>The PL/I statements that are used to define the host variables should be
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preceded by a BEGIN DECLARE SECTION statement and followed by an END DECLARE
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SECTION statement. If a BEGIN DECLARE SECTION and END DECLARE SECTION are
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specified, all host variable declarations used in SQL statements must be between
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the BEGIN DECLARE SECTION and the END DECLARE SECTION statements.</p>
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<p>All host variables within an SQL statement must be preceded by a colon
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(:).</p>
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<p>The names of host variables must be unique within the program, even if
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the host variables are in different blocks or procedures.</p>
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<p>An SQL statement that uses a host variable must be within the scope of
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the statement in which the variable was declared.</p>
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<p>Host variables must be scalar variables. They cannot be elements of an
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array.</p>
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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="rzajpdeclarehostpli.htm">Declare host variables in PL/I applications that use SQL</a></strong><br />
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The PL/I precompilers only recognize a subset of valid PL/I declarations as valid host variable declarations.</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="rzajpplone.htm" title="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.">Code SQL statements in PL/I applications</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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