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<h1 class="topictitle1">Specify select/omit statements in join logical files</h1>
<div><p>This topic discusses the rules for specifying select/omit statements
in join logical files.</p>
<div class="section"><div class="p">If you specify select/omit statements in a join logical file,
the following rules apply: <ul><li>The fields can come from any physical file the logical file uses (specified
on the JFILE keyword).</li>
<li>The fields you specify on the select/omit statements cannot be fields
defined as neither fields (N specified in position 38 for the field).</li>
<li>In some circumstances, you must specify the DYNSLT keyword when you specify
select/omit statements in join logical files. </li>
</ul>
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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 class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="../dds/kickoff.htm">DDS concepts</a></div>
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<div class="relref"><strong>Related reference</strong><br />
<div><a href="rbafoacjlf.htm" title="This example shows a more complex join logical file.">A complex join logical file (example 10)</a></div>
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