83 lines
5.5 KiB
HTML
83 lines
5.5 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="copyright" content="(C) Copyright IBM Corporation 2005" />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Select records by relative record numbers (FROMRCD and TORCD parameters)" />
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<meta name="abstract" content="You can use the FROMRCD and TORCD parameters to copy files with specifying their record numbers. Note that you can use these parameters on the CPYF command only." />
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<meta name="description" content="You can use the FROMRCD and TORCD parameters to copy files with specifying their record numbers. Note that you can use these parameters on the CPYF command only." />
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<meta name="DC.Relation" scheme="URI" content="rbal3selrecords.htm" />
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<meta name="DC.Relation" scheme="URI" content="rbal3add.htm" />
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<meta name="DC.Identifier" content="rbal3copyrrn" />
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<title>Select records by relative record numbers (FROMRCD and TORCD parameters)</title>
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</head>
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<body id="rbal3copyrrn"><a name="rbal3copyrrn"><!-- --></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 records by relative record numbers (FROMRCD and TORCD parameters)</h1>
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<div><p>You can use the FROMRCD and TORCD parameters to copy files with
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specifying their record numbers. Note that you can use these parameters on
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the CPYF command only.</p>
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<div class="p">Relative record numbers can be specified for a copy from any file type
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except a keyed logical file. A keyed physical file can be copied in arrival
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order if relative record numbers are specified for the FROMRCD or TORCD parameter.
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Records can be copied: <ul><li>From a specified record number (FROMRCD parameter) to a specified record
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number (TORCD parameter) OR</li>
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<li>Until a specified number of records (NBRRCDS parameter) has been copied</li>
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</ul>
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If the command reaches the end of the file before it reaches the specified
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ending record number or number of records, the copy completes normally.</div>
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<p>When a relative record number is specified, records are copied, starting
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with the specified relative record number, in the order in which they physically
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exist in the database file being copied from. This is true even if the physical
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file has a keyed sequence access path. You can use the COMPRESS parameter
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with the FROMRCD and TORCD parameters to further define which records you
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want to select for copying.</p>
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<p>If the from-file is a physical file or a logical file with an arrival sequence
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access path, the TORCD value is a relative record number that counts both
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the deleted and undeleted records ahead of it. If the from-file is a device
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file or inline data file, the TORCD value is a record number that includes
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only undeleted records (even for an I-format diskette file).</p>
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<p>Deleted records retain their position among records that are not deleted.
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However these records do not necessarily retain their relative record number
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when they are copied if they are in the specified subset and COMPRESS(*NO)
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is specified. If you specify COMPRESS(*YES), the command skips the deleted
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records and does not copy them. In this case, when the record number that
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is specified (FROMRCD parameter) is a deleted record, copying starts with
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the first undeleted record that follows.</p>
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<div class="p">This example shows how you can use the command to copy records from relative
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record number 500 to relative record number 1000 in the file EMP1 to the file
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EMP1T. <pre>CPYF FROMFILE(PERSONNEL/EMP1) +
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TOFILE(TESTLIB1/EMP1T) MBROPT(*REPLACE) +
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FROMRCD(500) TORCD(1000)</pre>
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</div>
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<div class="note"><span class="notetitle">Note:</span> If you use record numbers to select records, you cannot use record keys
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(FROMKEY/TOKEY parameters) to select records on the same CPYF command.</div>
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<p>For information about using the FROMRCD and TORCD parameters with distributed
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files, see <a href="../dbmult/rzaf3kickoff.htm">DB2<sup>®</sup> Multisystem
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for <span class="keyword">iSeries™</span></a> .</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="rbal3add.htm" title="When you specify *ADD, each record copied is added to the end of the existing records in the member.">Specify *ADD when copying files</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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