97 lines
4.9 KiB
HTML
97 lines
4.9 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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<html 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="security" content="public" />
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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="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example 1: Call a stored procedure which returns a single result set" />
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<meta name="abstract" content="This example shows the API calls ODBC application would make when calling a stored procedure that returns a result set." />
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<meta name="description" content="This example shows the API calls ODBC application would make when calling a stored procedure that returns a result set." />
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<meta name="DC.Relation" scheme="URI" content="rbafyresultsets.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rbafyresultsete1" />
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<meta name="DC.Language" 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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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example 1: Call a stored procedure which returns a single result set</title>
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</head>
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<body id="rbafyresultsete1"><a name="rbafyresultsete1"><!-- --></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">Example 1: Call a stored procedure which returns a single result set</h1>
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<div><p>This example shows the API calls ODBC application would make when
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calling a stored procedure that returns a result set. </p>
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<div class="section"><p>Note that in this example the DECLARE CURSOR statement does not
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have an explicit returnability specified. When there is only a single stored
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procedure on the call stack, the returnability attribute of RETURN TO CALLER
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as well as that of RETURN TO CLIENT will make the result set available to
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the caller of the application. Also note that the stored procedure is defined
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with a DYNAMIC RESULT SETS clause. For SQL procedures, this clause is required
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if the stored procedure will be returning result sets.</p>
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</div>
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<div class="section"><p>Defining the stored procedure: </p>
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<pre>PROCEDURE prod.resset
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CREATE PROCEDURE prod.resset () LANGUAGE SQL
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DYNAMIC RESULT SETS 1
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BEGIN
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DECLARE C1 CURSOR FOR SELECT * FROM QIWS.QCUSTCDT;
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OPEN C1;
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RETURN;
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END </pre>
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</div>
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<div class="section"><h4 class="sectiontitle">ODBC application</h4><div class="note"><span class="notetitle">Note:</span> Some of the logic
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has been removed.</div>
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<div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the
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terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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<pre> :
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strcpy(stmt,"call prod.resset()");
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rc = SQLExecDirect(hstmt,stmt,SQL_NTS);
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if (rc == SQL_SUCCESS)
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{
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// CALL statement has executed successfully. Process the result set.
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// Get number of result columns for the result set.
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rc = SQLNumResultCols(hstmt, &wNum);
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if (rc == SQL_SUCCESS)
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// Get description of result columns in result set
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{ rc = SQLDescribeCol(hstmt,à);
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if (rc == SQL_SUCCESS)
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:
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{
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// Bind result columns based on attributes returned
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//
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rc = SQLBindCol(hstmt,à);
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:
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// FETCH records until EOF is returned
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rc = SQLFetch(hstmt);
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while (rc == SQL_SUCCESS)
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{ // process result returned on the SQLFetch
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:
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rc = SQLFetch(hstmt);
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}
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:
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}
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// Close the result set cursor when done with it.
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rc = SQLFreeStmt(hstmt,SQL_CLOSE);
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:
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</pre>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafyresultsets.htm" title="In addition to returning output parameters, stored procedures have a feature by which a result table associated with a cursor opened in the stored procedure (called a result set) can be returned to the application issuing the CALL statement. That application can then issue fetch requests to read the rows of the result set cursor.">Return result sets from stored procedures</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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