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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <script src="./callback.js" type="text/javascript"></script> <noscript>Your browser does not support JavaScript. This help page requires JavaScript to render correctly.</noscript> </head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1.1 Build 005" /> <meta name="date" content="2009-04-21T9:46:25Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="About OLD and NEW Pseudorecords" /> <meta name="relnum" content="11g Release 2 (11.2)" /> <meta name="partnum" content="E10766-01" /> <link rel="copyright" href="./dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="./dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="prev" href="tdddg_triggers002.htm" title="Previous" type="text/html" /> <link rel="next" href="tdddg_triggers004.htm" title="Next" type="text/html" /> <title>About OLD and NEW Pseudorecords</title> </head> <body> <div class="zz-skip-header"><a href="#BEGIN">Skip Headers</a></div> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr valign="bottom"> <td align="left"></td> <td align="center"><a href="tdddg_triggers002.htm"><img width="24" height="24" src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdddg_triggers004.htm"><img width="24" height="24" src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BCFIGJAE" name="BCFIGJAE"></a><a id="TDDDG99937" name="TDDDG99937"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>About OLD and NEW Pseudorecords</h1> <a name="BEGIN" id="BEGIN"></a> <p>When a <a id="sthref561" name="sthref561"></a><a id="sthref562" name="sthref562"></a>row-level trigger fires, the PL/SQL run-time system creates and populates the two <a id="sthref563" name="sthref563"></a>pseudorecords <a id="sthref564" name="sthref564"></a><code>OLD</code> and <a id="sthref565" name="sthref565"></a><code>NEW</code>. They are called pseudorecords because they have some, but not all, of the properties of records.</p> <p>For the row that the trigger is processing:</p> <ul> <li> <p>For an <code>INSERT</code> trigger, <code>OLD</code> contains no values, and <code>NEW</code> contains the new values.</p> </li> <li> <p>For an <code>UPDATE</code> trigger, <code>OLD</code> contains the old values, and <code>NEW</code> contains the new values.</p> </li> <li> <p>For a <code>DELETE</code> trigger, <code>OLD</code> contains the old values, and <code>NEW</code> contains no values.</p> </li> </ul> <p>To reference a pseudorecord, put a colon before its name—:<code>OLD</code> or :<code>NEW</code>—as in <a href="tdddg_triggers006.htm#BABBFAGD">Example: Creating an INSTEAD OF Trigger</a>.</p> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="javascript:open('http://www.oracle.com/pls/db112/lookup?id=LNPLS99955','newWindow').focus()"><span class="italic">Oracle Database PL/SQL Language Reference</span></a></p> <p><a href="tdddg_triggers002.htm#BABDAGJJ">Creating Triggers</a></p> </div> </div> <!-- class="sect2" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr> <td align="left"><span class="copyrightlogo">Copyright © 1996, 2009, Oracle and/or its affiliates. All rights reserved.</span><br /> <a href="./dcommon/html/cpyr.htm"><span class="copyrightlogo">Legal Notices</span></a></td> <td align="center"><a href="tdddg_triggers002.htm"><img width="24" height="24" src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdddg_triggers004.htm"><img width="24" height="24" src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> </div> <!-- class="footer" --> </body> </html>
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