113 lines
6.7 KiB
HTML
113 lines
6.7 KiB
HTML
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<meta name="DC.Title" content="TRNTBL (Translation Table) keyword—logical files only" />
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<meta name="abstract" content="Use this field-level keyword to specify the name of a translation table to be used when passing this field between the physical file on the PFILE or JFILE keyword and your program." />
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<meta name="DC.subject" content="TRNTBL (Translation Table) keyword, Translation Table (TRNTBL) keyword" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<title>Physical and Logical Files, TRNTBL</title>
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<body id="tdtrntb"><a name="tdtrntb"><!-- --></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">TRNTBL (Translation Table) keyword—logical files only</h1>
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<div><p>Use this field-level keyword to specify the name of a translation
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table to be used when passing this field between the physical file on the
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PFILE or JFILE keyword and your program.</p>
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<div class="section"><p>The field must be a character field and its length cannot be redefined
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in the logical file. If the TRNTBL keyword is specified with the CONCAT keyword,
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the fields specified on the CONCAT keyword must all be character fields.</p>
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<div class="p">The
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format of the keyword is: <pre>TRNTBL([library-name/]translation-table-name)</pre>
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</div>
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<p>The
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translation-table-name is a required parameter value; the library-name is
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optional. If you do not specify the library-name, the operating system
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uses the library list (*LIBL) that is in effect at file creation time.</p>
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<p>The
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translation-table-name cannot name an ICU table.</p>
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<p>This keyword is valid
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only for character fields that are input-only (I specified in position 38)
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or neither (N specified in position 38) fields.</p>
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<p>You cannot specify the
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TRNTBL keyword on a hexadecimal field (H in position 35). Do not specify the
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TRNTBL keyword on a date, time, or timestamp field (L, T, or Z in position
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35).</p>
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<p>You can specify as many as 99 different translation tables for
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different fields in the same logical file.</p>
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<p>Translation occurs when the
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field is read from the physical file. Therefore, all functions specified in
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the logical file (such as key field sequencing, select/omit processing, and
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joining of records) depend on the translated version of the data.</p>
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<p>The
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TRNTBL keyword changes the data in the records returned from the logical file.
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The ALTSEQ keyword changes only the order of the records returned from the
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logical file.</p>
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<div class="p">The TRNTBL keyword is similar to the
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CHRID keyword but differs from the latter as follows: <ul><li>The TRNTBL keyword names the translation table to be used; the CHRID keyword
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does not.</li>
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<li>The TRNTBL keyword changes data on input to the program when your program
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is reading a logical file. The CHRID keyword changes the data for display
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or printing on a specific device. Use the TRNTBL keyword when your program
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will use the changed data (for example, in an IF-THEN-ELSE statement or a
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COBOL SORT statement). If your program is handling data that comes only from
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a logical file, you do not need to specify the CHRID keyword in display or
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printer files used by the program.</li>
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</ul>
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</div>
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<p>The TRNTBL keyword is not valid when you specify FILETYPE(*SRC)
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on the Create Logical File (CRTLF) command.</p>
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<div class="note"><span class="notetitle">Notes:</span> <ol><li>When you use the TRNTBL keyword, the length of the field in the logical
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file must be the same as the length of the corresponding field in the physical
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file.</li>
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<li>At file creation time, you must have use authority to the translation
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table. The translation table is created using the Create Table (CRTTBL) command.</li>
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<li>The translation table specified in the TRNTBL keyword is referred to only
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when the logical file is created. Therefore, a change to a translation table
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does not affect the logical file until the logical file is re-created.</li>
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</ol>
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</div>
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</div>
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<div class="example"><h4 class="sectiontitle">Example</h4><p>The following example shows how to specify
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the TRNTBL keyword.</p>
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<pre>|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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00010A R RECORD1 PFILE(PF1)
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00020A CHAR1 I TRNTBL(LIB1/TBL1)
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00030A CHAR2 A I TRNTBL(LIB2/TBL2)
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00040A NUM1
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00050A NUM2
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A</pre>
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<p>Field CHAR1 is translated using table TBL1 in library
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LIB1. Field CHAR2 is translated using table TBL2 in library LIB2. Field CHAR2
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was redefined in the logical file as a character field (A in position 35)
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to allow the TRNTBL keyword to be specified. Fields NUM1 and NUM2 are numeric
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fields in the physical file PF1 and cannot have the TRNTBL keyword specified
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for them.</p>
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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="rzakbmstlfkeyw.htm" title="This topic lists valid keyword entries for describing physical and logical files. They are typed in positions 45 through 80 (functions).">Keyword entries for physical and logical files (positions 45 through 80)</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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