75 lines
5.1 KiB
HTML
75 lines
5.1 KiB
HTML
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<meta name="DC.Title" content="Select a specified number of records (NBRRCDS parameter)" />
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<meta name="abstract" content="When you specify a FROMKEY or FROMRCD parameter, you can specify the number of records (NBRRCDS parameter) to be copied instead of the TOKEY or TORCD parameter." />
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<title>Select a specified number of records (NBRRCDS parameter)</title>
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<body id="rbal3copysele"><a name="rbal3copysele"><!-- --></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">Select a specified number of records (NBRRCDS parameter)</h1>
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<div><p>When you specify a FROMKEY or FROMRCD parameter, you can specify
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the number of records (NBRRCDS parameter) to be copied instead of the TOKEY
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or TORCD parameter.</p>
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<p> You cannot specify both the NBRRCDS and the TORCD or TOKEY
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parameters. The specified number of records is copied starting with the specified
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from-key value or from-record number.</p>
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<div class="note"><span class="notetitle">Note:</span> You can use this parameter on the following commands: CPYF,
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CPYFRMDKT, CPYFRMQRYF, CPYFRMTAP, CPYTODKT, and CPYTOTAP.</div>
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<div class="p">You can specify the NBRRCDS parameter without specifying the FROMKEY or
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FROMRCD parameter. The copy command copies records by starting with the first
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record in the file. Note that the number of records specified is the number
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of records actually copied to the to-file, which includes:<img src="./delta.gif" alt="Start of change" /><ul><li>Deleted records in the from-file if COMPRESS(*NO) is specified, but DOES
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NOT INCLUDE</li>
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<li>Records excluded by the INCCHAR and INCREL parameters</li>
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</ul><img src="./deltaend.gif" alt="End of change" />
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</div>
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<div class="p">This example shows how you can use the copy command to copy 1000 records
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in the file EMP1 to the file EMP1T. The command copies records from the first
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member in EMP1 and replace the records in the first member in EMP1T. <pre>CPYF FROMFILE(PERSONNEL/EMP1) +
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TOFILE(TESTLIB1/EMP1T) MBROPT(*REPLACE) +
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NBRRCDS(1000)</pre>
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You can also use the NBRRCDS parameter to examine
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a subset of records on a list: <pre>CPYF FROMFILE(PERSONNEL/EMP1) TOFILE(*PRINT) +
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FROMRCD(250) NBRRCDS(10) OUTFMT(*HEX)</pre>
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</div>
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<p>When you successfully copy an open query file, the file position is unpredictable.
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If you want to run a different program with the same files or run another
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CPYFRMQRYF, you must position the file or close the file and open it with
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the same OPNQRYF command. You can position the file with the Position Database
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File (POSDBF) command. In some cases, you can use a high-level language program
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statement.</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="rbal3selrecords.htm" title="You can use parameters on the copy commands to select only the specific records that you want to copy.">Select the records to copy</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="rbal3copysel.htm" title="You can use the RCDFMT parameter to select records of a certain record format to copy. Note that you can use this parameter on the CPYF command only.">Selecting records using a specified record format name (RCDFMT parameter)</a></div>
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<div><a href="rbal3copyrrk.htm" title="You can specify record keys to copy only from a keyed database file. Note that you can use this parameter on the CPYF command only.">Select records by record keys (FROMKEY and TOKEY Parameters)</a></div>
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