96 lines
5.5 KiB
HTML
96 lines
5.5 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" 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="dc.language" scheme="rfc1766" 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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<meta name="dc.date" scheme="iso8601" content="2005-09-19" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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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="keywords" content="HOLD LOCATOR statement, HOLD LOCATOR,
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SQL statements, locator, in HOLD LOCATOR statement, variable" />
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<title>HOLD LOCATOR</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="holdloc"></a>
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<h2 id="holdloc"><a href="rbafzmst02.htm#ToC_1140">HOLD LOCATOR</a></h2><a id="idx2849" name="idx2849"></a><a id="idx2850" name="idx2850"></a><a id="idx2851" name="idx2851"></a>
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<p>The HOLD LOCATOR statement allows a LOB locator variable to retain its
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association with a value beyond a unit of work.</p>
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<a name="wq1614"></a>
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<h3 id="wq1614"><a href="rbafzmst02.htm#ToC_1141">Invocation</a></h3>
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<p>This statement can only be embedded in an application program.
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It cannot be issued interactively. It is an executable statement that can
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be dynamically prepared. However, the EXECUTE statement with the USING clause
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must be used to execute the prepared statement. HOLD LOCATOR cannot be used
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with the EXECUTE IMMEDIATE statement. It must not be specified in REXX.</p>
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<a name="wq1615"></a>
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<h3 id="wq1615"><a href="rbafzmst02.htm#ToC_1142">Authorization</a></h3>
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<p>None required.</p>
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<a name="wq1616"></a>
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<h3 id="wq1616"><a href="rbafzmst02.htm#ToC_1143">Syntax</a></h3>
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<a href="rbafzmstholdloc.htm#synshl"><img src="c.gif" alt="Click to skip syntax diagram" /></a>
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<pre class="cgraphic"><span><img src="c.gif" alt="Read syntax diagram" longdesc="rbafzmstsyn355.htm"
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border="0" /></span><a href="#skipsyn-354"><img src="c.gif" alt="Skip visual syntax diagram"
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border="0" /></a> .-,--------.
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V |
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>>-HOLD LOCATOR----<span><span class="italic">variable</span></span>-+----------------------------------><
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</pre>
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<a name="skipsyn-354" id="skipsyn-354"></a>
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<a name="synshl"></a>
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<h3 id="synshl"><a href="rbafzmst02.htm#ToC_1144">Description</a></h3>
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<dl class="parml">
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<dt class="bold"><var class="pv">variable,...</var> </dt><a id="idx2852" name="idx2852"></a>
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<dd>Identifies a variable that must be declared in accordance with the rules
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for declaring variable locator variables. An indicator variable must not be
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specified. The locator variable type must be a binary large object locator,
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a character large object locator, or a double-byte character large object
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locator.
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<p>After the HOLD LOCATOR statement is executed, each locator variable
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in the <var class="pv">variable</var> list has the hold property.</p>
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<p>The
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variable must currently have a locator assigned to it. That is, a locator
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must have been assigned during this unit of work (by a CALL, FETCH, SELECT
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INTO, SET variable, or VALUES INTO statement) and must not subsequently have
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been freed (by a FREE LOCATOR statement); otherwise, an error is raised.</p>
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<p>If more than one variable is specified in the HOLD LOCATOR statement and an
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error occurs on one of the locators, no locators will be held.</p>
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</dd>
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</dl>
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<a name="wq1617"></a>
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<h3 id="wq1617"><a href="rbafzmst02.htm#ToC_1145">Note</a></h3>
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<p>A LOB locator variable that has the hold property is freed (has its association
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between it and its value removed) when:</p>
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<ul>
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<li>The SQL FREE LOCATOR statement is executed for the locator variable.</li>
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<li>The SQL ROLLBACK statement without a HOLD option
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is executed.</li>
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<li>The SQL session is terminated.</li></ul>
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<a name="wq1618"></a>
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<h3 id="wq1618"><a href="rbafzmst02.htm#ToC_1146">Example</a></h3>
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<p>Assume that the employee table contains columns RESUME, HISTORY, and PICTURE
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and that locators have been established in a program to represent the values
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represented by the columns. Give the CLOB locator variables LOCRES and LOCHIST,
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and the BLOB locator variable LOCPIC the hold property.</p>
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<pre class="xmp"> <span class="bold">HOLD LOCATOR</span> :LOCRES,:LOCHIST,:LOCPIC</pre><a id="idx2853" name="idx2853"></a><a id="idx2854" name="idx2854"></a>
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