110 lines
5.8 KiB
HTML
110 lines
5.8 KiB
HTML
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<title>Record missing in secondary file: JDFTVAL keyword not specified (case
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2A)</title>
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</head>
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<body id="rbafocas2a"><a name="rbafocas2a"><!-- --></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">Record missing in secondary file: JDFTVAL keyword not specified (case
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2A)</h1>
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<div><div class="section"><p>Assume that a join logical file is specified as in <a href="rbafox2phyf.htm#rbafox2phyf">Basic concepts of joining two physical files (example 1)</a>,
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and there are four records in PF1 and three records in PF2, as shown in the
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following two tables.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="border" border="1" rules="all"><caption>Table 1. Physical file 1 (PF1)</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e39">Employee number</th>
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<th valign="bottom" id="d0e41">Name</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e39 ">235</td>
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<td valign="top" headers="d0e41 ">Anne</td>
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</tr>
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<tr><td valign="top" headers="d0e39 ">440</td>
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<td valign="top" headers="d0e41 ">Doug</td>
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</tr>
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<tr><td valign="top" headers="d0e39 ">500</td>
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<td valign="top" headers="d0e41 ">Mark</td>
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</tr>
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<tr><td valign="top" headers="d0e39 ">729</td>
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<td valign="top" headers="d0e41 ">Sue</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="border" border="1" rules="all"><caption>Table 2. Physical file 2 (PF2)</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e72">Employee number</th>
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<th valign="bottom" id="d0e74">Salary</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e72 ">235</td>
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<td valign="top" headers="d0e74 ">1700.00</td>
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</tr>
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<tr><td valign="top" headers="d0e72 ">440</td>
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<td valign="top" headers="d0e74 ">950.50</td>
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</tr>
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<tr><td valign="top" headers="d0e72 ">729</td>
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<td valign="top" headers="d0e74 ">1400.90</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="section"><p>In PF2, no record is found for number 500.</p>
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</div>
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<div class="section"><p>The program reads the join logical file and gets the following
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records.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="border" border="1" rules="all"><caption>Table 3. Join logical file (JLF)</caption><thead align="left"><tr valign="bottom"><th valign="bottom" width="33.33333333333333%" id="d0e107">Employee number</th>
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<th valign="bottom" width="33.33333333333333%" id="d0e109">Name</th>
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<th valign="bottom" width="33.33333333333333%" id="d0e111">Salary</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="33.33333333333333%" headers="d0e107 ">235</td>
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<td valign="top" width="33.33333333333333%" headers="d0e109 ">Anne</td>
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<td valign="top" width="33.33333333333333%" headers="d0e111 ">1700.00</td>
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</tr>
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<tr><td valign="top" width="33.33333333333333%" headers="d0e107 ">440</td>
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<td valign="top" width="33.33333333333333%" headers="d0e109 ">Doug</td>
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<td valign="top" width="33.33333333333333%" headers="d0e111 ">950.50</td>
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</tr>
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<tr><td valign="top" width="33.33333333333333%" headers="d0e107 ">729</td>
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<td valign="top" width="33.33333333333333%" headers="d0e109 ">Sue</td>
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<td valign="top" width="33.33333333333333%" headers="d0e111 ">1400.90</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>If you do not specify the JDFTVAL keyword and no match is found
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for the join field in the secondary file, the record is not included in the
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join logical file.</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="rbafox2phyf.htm" title="A join logical file is a logical file that combines (in one record format) fields from two or more physical files because in the record format not all the fields need to exist in all the physical files.">Basic concepts of joining two physical files (example 1)</a></div>
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</div>
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</div>
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</body>
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</html> |