153 lines
7.9 KiB
HTML
153 lines
7.9 KiB
HTML
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<title>A complex join logical file (example 10)</title>
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<body id="rbafoacjlf"><a name="rbafoacjlf"><!-- --></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">A complex join logical file (example 10)</h1>
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<div><p>This example shows a more complex join logical file.</p>
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<div class="section"><p>Assume that the data is in the following three physical files:</p>
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</div>
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<div class="example"> <pre><strong>Vendor Master File (PF1)</strong>
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|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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A R RCD1 TEXT('VENDOR INFORMATION')
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A VDRNBR 5 TEXT('VENDOR NUMBER')
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A VDRNAM 25 TEXT('VENDOR NAME')
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A STREET 15 TEXT('STREET ADDRESS')
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A CITY 15 TEXT('CITY')
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A STATE 2 TEXT('STATE')
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A ZIPCODE 5 TEXT('ZIP CODE')
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A DFT('00000')
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A PAY 1 TEXT('PAY TERMS')
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A
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<strong>Order File (PF2)</strong>
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|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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A R RCD2 TEXT('VENDORS ORDER')
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A VDRNUM 5S 0 TEXT('VENDOR NUMBER')
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A JOBNBR 6 TEXT('JOB NUMBER')
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A PRTNBR 5S 0 TEXT('PART NUMBER')
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A DFT(99999)
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A QORDER 3S 0 TEXT('QUANTITY ORDERED')
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A UNTPRC 6S 2 TEXT('PRICE')
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A
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<strong>Part File (PF3)</strong>
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|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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A R RCD3 TEXT('DESCRIPTION OF PARTS')
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A PRTNBR 5S 0 TEXT('PART NUMBER')
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A DFT(99999)
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A DESCR 25 TEXT('DESCRIPTION')
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A UNITPRICE 6S 2 TEXT('UNIT PRICE')
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A WHSNBR 3 TEXT('WAREHOUSE NUMBER')
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A PRTLOC 4 TEXT('LOCATION OF PART')
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A QOHAND 5 TEXT('QUANTITY ON HAND')
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A</pre>
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</div>
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<div class="section"><div class="p">The join logical file record format should contain the following
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fields: <ul><li><em>Vdrnam</em> (vendor name)</li>
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<li><em>Street, City, State</em>, and <em>Zipcode</em> (vendor address)</li>
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<li><em>Jobnbr</em> (job number)</li>
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<li><em>Prtnbr</em> (part number)</li>
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<li><em>Descr</em> (description of part)</li>
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<li><em>Qorder</em> (quantity ordered)</li>
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<li><em>Untprc</em> (unit price)</li>
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<li><em>Whsnbr</em> (warehouse number)</li>
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<li><em>Prtloc</em> (location of part)</li>
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</ul>
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</div>
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</div>
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<div class="section"><p>The data description specifications (DDS) for this join logical
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file are shown as follows:</p>
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</div>
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<div class="example"> <pre><strong>Join Logical File (JLF)</strong>
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|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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A <strong>1</strong> DYNSLT
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A <strong>2</strong> JDFTVAL
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A R RECORD1 JFILE(PF1 PF2 PF3)
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A <strong>3</strong> J JOIN(1 2)
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A JFLD(VDRNBR VDRNUM)
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A <strong>4</strong> JDUPSEQ(JOBNBR)
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A <strong>5</strong> J JOIN(2 3)
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A <strong>6</strong> JFLD(PRTNBR PRTNBR)
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A JFLD(UNTPRC UNITPRICE)
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A <strong>7</strong> VDRNUM 5A N TEXT('CHANGED ZONED TO CHAR')
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A VDRNAM
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A ADDRESS <strong>8</strong> CONCAT(STREET CITY STATE +
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A ZIPCODE)
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A JOBNBR
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A PRTNBR <strong>9</strong> JREF(2)
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A DESCR
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A QORDER
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A UNTPRC
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A WHSNBR
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A PRTLOC
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A <strong>10</strong> S VDRNAM COMP(EQ 'SEWING COMPANY')
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A S QORDER COMP(GT 5)
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A</pre>
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</div>
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<div class="section"> <dl><dt class="dlterm">1</dt>
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<dd>The DYNSLT keyword is required because the JDFTVAL keyword and select
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fields are specified.</dd>
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<dt class="dlterm">2</dt>
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<dd>The JDFTVAL keyword is specified to pick up default values in physical
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files.</dd>
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<dt class="dlterm">3</dt>
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<dd>First join specification.</dd>
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<dt class="dlterm"><span class="uicontrol">4</span></dt>
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<dd>The JDUPSEQ keyword is specified because duplicate vendor numbers occur
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in PF2.</dd>
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<dt class="dlterm">5</dt>
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<dd>Second join specification.</dd>
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<dt class="dlterm">6</dt>
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<dd>Two JFLD keywords are specified to ensure that the correct records are
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joined from the PF2 and PF3 files.</dd>
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<dt class="dlterm">7</dt>
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<dd>The <em>Vdrnum</em> field is redefined from zoned decimal to character (because
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it is used as a join field and it does not have the same attributes in PF1
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and PF2).</dd>
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<dt class="dlterm">8</dt>
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<dd>The CONCAT keyword concatenates four fields from the same physical file
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into one field.</dd>
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<dt class="dlterm">9</dt>
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<dd>The JREF keyword must be specified because the <em>Prtnbr</em> field exists
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in two physical files and you want to use the one in PF2.</dd>
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<dt class="dlterm">10</dt>
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<dd>The select/omit fields are <em>Vdrnam</em> and <em>Qorder</em>. <div class="note"><span class="notetitle">Note:</span> They come
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from two different physical files.)</div>
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</dd>
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</dl>
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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="rbafojnlof.htm" title="These topics provide examples to illustrate how to set up a join logical file. Performance, integrity, and a summary of rules for join logical files are also included.">Set up a join logical file</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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