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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="2009-04-21T9:46:24Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Tutorial: Declaring Variables and Constants in a Subprogram" /> <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_subprograms018.htm" title="Previous" type="text/html" /> <link rel="next" href="tdddg_subprograms020.htm" title="Next" type="text/html" /> <title>Tutorial: Declaring Variables and Constants in a Subprogram</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_subprograms018.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_subprograms020.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="CIHBGDBA" name="CIHBGDBA"></a><a id="TDDDG42200" name="TDDDG42200"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --> <h1>Tutorial: Declaring Variables and Constants in a Subprogram</h1> <a name="BEGIN" id="BEGIN"></a> <p><a id="sthref407" name="sthref407"></a><a id="sthref408" name="sthref408"></a>This tutorial shows how to use the SQL Developer tool Edit to declare variables and constants in the <code>EMP_EVAL</code>.<code>calculate_score</code> function (specified in <a href="tdddg_subprograms014.htm#CIHHDBFE">"Tutorial: Creating a Package Specification"</a>). (This tutorial is also an example of changing a <a id="sthref409" name="sthref409"></a>package body.)</p> <a id="TDDDG224" name="TDDDG224"></a> <p class="subhead2">To declare variables and constants in calculate_score function:</p> <ol> <li> <p>On the Connections tab, expand the <code>hr_conn</code> information by clicking the plus sign (<span class="bold">+</span>) to the left of the <code>hr_conn</code> icon.</p> <p>Under the <code>hr_conn</code> icon, a list of schema object types appears.</p> </li> <li> <p>Expand <span class="bold">Packages</span>.</p> <p>A list of packages appears.</p> </li> <li> <p>Expand <span class="bold">EMP_EVAL</span>.</p> <p>A list appears.</p> </li> <li> <p>Right-click <span class="bold">EMP_EVAL Body</span>.</p> <p>A list of choices appears.</p> </li> <li> <p>Click <span class="bold">Edit</span>.</p> <p>The <code>EMP_EVAL</code> Body pane appears, showing the code for the package body.</p> </li> <li> <p>Between <code>RETURN</code> <code>NUMBER</code> <code>AS</code> and <code>BEGIN</code>, add these variable and constant declarations:</p> <pre xml:space="preserve" class="oac_no_warn"> n_score NUMBER(1,0); -- variable n_weight NUMBER; -- variable max_score CONSTANT NUMBER(1,0) := 9; -- constant, initial value 9 max_weight CONSTANT NUMBER(8,8) := 1; -- constant, initial value 1 </pre></li> <li> <p>From the File menu, select <span class="bold">Save</span>.</p> <p>Oracle Database saves the changed package body.</p> </li> </ol> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="javascript:open('http://www.oracle.com/pls/db112/lookup?id=LNPLS00202','newWindow').focus()"><span class="italic">Oracle Database PL/SQL Language Reference</span></a></p> <p><a href="tdddg_subprograms023.htm#CIHIBCCJ">Assigning Values to Variables with the Assignment Operator</a></p> <p><a href="tdddg_subprograms018.htm#CIHBCBHC">Declaring and Assigning Values to Variables and Constants</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. 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