70 lines
5.4 KiB
HTML
70 lines
5.4 KiB
HTML
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<title>Usage notes for Open Query File (OPNQRYF) command </title>
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<body id="rbafoopnex"><a name="rbafoopnex"><!-- --></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">Usage notes for Open Query File (OPNQRYF) command </h1>
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<div><p>These usage notes pertain to the examples in the topics that describe
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how to specify the parameters for the major functions of the Open Query File
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(OPNQRYF) command and how to use the OPNQRYF command with your high-level
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language program.</p>
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<div class="p"><div class="note"><span class="notetitle">Notes:</span> <ol><li>If you run the OPNQRYF command from a command entry line with the OPNSCOPE(*ACTGRPDFN)
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or TYPE(*NORMAL) parameter option, error messages that occur after the OPNQRYF
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command successfully runs will not close the file. Such messages
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would have closed the file prior to Version 2 Release 3 when TYPE(*NORMAL)
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was used. The system automatically runs the Reclaim Resources (RCLRSC) command
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if an error message occurs, except for message CPF0001, which is sent when
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the system detects an error in the command. However, the RCLRSC command only
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closes files opened from the default activation group at a higher level in
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the call stack than the level at which the RCLRSC command was run.</li>
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<li>After running a program that uses the OPNQRYF command for sequential processing,
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the file position is normally at the end of the file. If you want to run the
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same program or a different program with the same files, you must position
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the file or close the file and open it with the same OPNQRYF command. You
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can position the file with the Position Database File (POSDBF) command. In
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some cases, a high-level language program statement can be used.</li>
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</ol>
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</div>
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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="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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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rbafozlt.htm" title="In the Open Query File (OPNQRYF) command, a zero-length literal is denoted as a quoted string with nothing, not even a blank, between the quotation marks (""). Zero-length literal support changes the results of a comparison when used as the compare argument of the contains (*CT) function.">The zero-length literal and the contains (*CT) function</a></div>
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<div><a href="rbafodynrs.htm" title="Dynamic record selection allows you to request a subset of the records in a file without using data description specifications (DDS).">Select records without using DDS</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="rbafoopncl.htm" title="The Open Query File (OPNQRYF) command has these basic rules that can prevent coding errors.">CL program coding with the Open Query File (OPNQRYF) command</a></div>
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