58 lines
3.9 KiB
HTML
58 lines
3.9 KiB
HTML
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<meta name="DC.Title" content="Considerations for arranging records" />
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<meta name="abstract" content="This topic discusses the considerations for using the Open Query File (OPNQRYF) command to arrange records." />
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<title>Considerations for arranging records</title>
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<body id="rbafocarr"><a name="rbafocarr"><!-- --></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">Considerations for arranging records</h1>
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<div><p>This topic discusses the considerations for using the Open Query
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File (OPNQRYF) command to arrange records.</p>
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<p>The default processing for the OPNQRYF command provides records in any
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order that improves performance and does not conflict with the order specified
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on the KEYFLD parameter. Therefore, unless you specify the KEYFLD parameter
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to either name specific key fields or specify KEYFLD(*FILE), the sequence
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of the records returned to your program can vary each time you run the same
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OPNQRYF command.</p>
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<p>When you specify the KEYFLD(*FILE) parameter option for the OPNQRYF command,
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and a sort sequence other than *HEX has been specified for the query with
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the job default or the OPNQRYF SRTSEQ parameter, you can receive your records
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in an order that does not reflect the true file order. If the file is keyed,
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the query's sort sequence is applied to the key fields of the file and informational
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message CPI431F is sent. The file's sort sequence and alternative collating
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sequence table are ignored for the ordering, if they exist. This allows users
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to indicate which fields to apply a sort sequence to without having to list
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all the field names. If a sort sequence is not specified for the query (for
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example, *HEX), ordering is done as it was prior to Version 2 Release 3.</p>
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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="rbafoopnqf.htm" title="The Open Query File (OPNQRYF) command is a control language (CL) command that allows you to perform many data processing functions on database files. These topics discuss how to create a query using the OPNQRYF command, how to specify parameters for its major functions, and how to use it with your high-level language program.">Use Open Query File (OPNQRYF) command</a></div>
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