52 lines
3.4 KiB
HTML
52 lines
3.4 KiB
HTML
<?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="reference" />
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<meta name="DC.Title" content="Examples: UDF code" />
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<meta name="abstract" content="These examples show how to implement UDF code by using SQL functions and external functions." />
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<meta name="description" content="These examples show how to implement UDF code by using SQL functions and external functions." />
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<meta name="DC.Relation" scheme="URI" content="rbafyexamudfcounter.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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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<title>Examples: UDF code</title>
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<body id="rbafyuwexam"><a name="rbafyuwexam"><!-- --></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">Examples: UDF code</h1>
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<div><p>These examples show how to implement UDF code by using SQL functions
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and external functions.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rbafyudfexsqrnum.htm">Example: Square of a number UDF</a></strong><br />
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In this example, suppose that you want a function that returns the square of a number.</li>
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<li class="ulchildlink"><strong><a href="rbafyexamudfcounter.htm">Example: Counter</a></strong><br />
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Suppose you want to number the rows in your SELECT statement. So you write a UDF which increments and returns a counter.</li>
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<li class="ulchildlink"><strong><a href="rbafyudfweather.htm">Example: Weather table function</a></strong><br />
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This is an example table function that returns weather information for various cities in the United States.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafyudf.htm" title="In writing SQL applications, you can implement some actions or operations as a UDF or as a subroutine in your application: Although it may appear easier to implement new operations as subroutines in your application, you might want to consider the advantages of using a UDF instead.">Use user-defined functions (UDFs)</a></div>
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</div>
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</body>
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