64 lines
3.7 KiB
HTML
64 lines
3.7 KiB
HTML
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<title>CPI433F - Multiple join classes used to process join</title>
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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">CPI433F - Multiple join classes used to process join</h1>
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<div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th colspan="2" align="center" valign="middle" id="d0e16">CPI433F</th>
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</tr>
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</thead>
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<tbody><tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Message Text:</td>
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<td valign="middle" width="73.9795918367347%" headers="d0e16 ">Multiple join classes used to process join.</td>
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</tr>
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<tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Cause Text:</td>
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<td valign="middle" width="73.9795918367347%" headers="d0e16 ">Multiple join classes are used when join queries are written that have
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conflicting operations or cannot be implemented as a single query.
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<p></p>
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Each join class step will be optimized and processed separately. Debug
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messages detailing the implementation of each join class follow this message
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in the joblog. <p></p>
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The list below shows the file names of the files
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used in this query. The format of each entry in this list is the number of
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the join class step, the number of the join position in the join class step,
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the file name as specified in the query, the member name as specified in the
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query, the file name actually used in the join class step, and the member
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name actually used in the join class step. </td>
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</tr>
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<tr valign="middle"><td valign="middle" width="26.02040816326531%" headers="d0e16 ">Recovery Text:</td>
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<td valign="middle" width="73.9795918367347%" headers="d0e16 "> Refer to <a href="perf24.htm#perf24">Join optimization</a> for more information
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about join classes.</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="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="pimes.htm" title="You can evaluate the structure and performance of the given SQL statements in a program using informational messages put in the job log by the database manager.">Query optimization performance information messages</a></div>
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