77 lines
4.3 KiB
HTML
77 lines
4.3 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="DB2 UDB CLI SQLSTATEs" />
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<meta name="DC.subject" content="SQLSTATEs" />
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<meta name="keywords" content="SQLSTATEs" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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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>DB2 UDB
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CLI SQLSTATEs</title>
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</head>
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<body id="rzadpsqlstates"><a name="rzadpsqlstates"><!-- --></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">DB2 UDB
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CLI SQLSTATEs</h1>
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<div><p>Because different database servers often have different diagnostic message
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codes, DB2<sup>®</sup> UDB
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CLI provides a standard set of <em>SQLSTATEs</em> that are defined by the X/Open
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SQL CAE specification. This allows consistent message handling across different
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database servers.</p>
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<div class="p">SQLSTATEs are alphanumeric strings
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of 5 characters (bytes) with a format of <samp class="codeph">ccsss</samp>, where <samp class="codeph">cc</samp> indicates
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class and <samp class="codeph">sss</samp> indicates subclass. Any SQLSTATE that has a
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class of: <ul><li>01, is a warning.</li>
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<li>HY, is generated by the CLI driver (either DB2 UDB CLI or ODBC).</li>
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</ul>
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</div>
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<p>The <samp class="codeph">SQLError()</samp> function also returns an
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error code if the code is generated by the server. When connected to an IBM<sup>®</sup> database
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server, the error code is SQLCODE. If the code is generated by DB2 UDB CLI instead
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of at the server, then the error code is set to -99999.</p>
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<p>DB2 UDB
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CLI SQLSTATEs include both additional IBM defined SQLSTATEs that are returned
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by the database server, and DB2 UDB CLI defined SQLSTATEs for conditions that are
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not defined in the X/Open specification. This allows for the maximum amount
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of diagnostic information to be returned. When running applications in Windows<sup>®</sup> using
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ODBC, it is also possible to receive ODBC defined SQLSTATEs.</p>
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<div class="p">Follow these
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guidelines for using SQLSTATEs within your application: <ul><li>Always check the function return code before calling <samp class="codeph">SQLError()</samp> to
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determine if diagnostic information is available.</li>
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<li>Use the SQLSTATEs rather than the error code.</li>
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<li>To increase your application's portability, only build dependencies on
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the subset of DB2 UDB
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CLI SQLSTATEs that are defined by the X/Open specification, and return the
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additional ones as information only. (Dependencies refers to the application
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making logic flow decisions based on specific SQLSTATEs.)</li>
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<li>For maximum diagnostic information, return the text message along with
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the SQLSTATE (if applicable, the text message includes the IBM defined
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SQLSTATE). It is also useful for the application to print out the name of
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the function that returned the error.</li>
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</ul>
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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="rzadphddiag.htm" title="This topic deals with warning or error conditions generated within an application.">Diagnostics in a DB2 UDB CLI application</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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