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Lu, Huayi ef0ada5a59 DWS DEV 20240716 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Lu, Huayi <luhuayi@huawei.com>
Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
2024-11-02 09:07:47 +00:00

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<a name="EN-US_TOPIC_0000001460881012"></a><a name="EN-US_TOPIC_0000001460881012"></a>
<h1 class="topictitle1">CREATE EXCEPT RULE</h1>
<div id="body0000001334180054"><div class="section" id="EN-US_TOPIC_0000001460881012__s26b72b1858a44a5984f0fa6d9a84a67c"><h4 class="sectiontitle">Function</h4><p id="EN-US_TOPIC_0000001460881012__ae0128647c2ba4636aa6dfcf1ca144d9a">Creates an exception rule set. When creating an exception rule, you can specify the rule thresholds and operations following the triggering of an exception rule. Currently, only the <strong id="EN-US_TOPIC_0000001460881012__b1088913023420">abort</strong> operation is supported.</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001460881012__sa59cc6cc8a984fd197fefdd1473b4d11"><h4 class="sectiontitle">Precautions</h4><p id="EN-US_TOPIC_0000001460881012__p10190979184">None</p>
</div>
<div class="section" id="EN-US_TOPIC_0000001460881012__s3f9d958138244c4385543e5644eb82e6"><h4 class="sectiontitle">Syntax</h4><div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001460881012__s226ab8de9c9b4110b4900a71f69c2026"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal"> 1</span>
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<span class="normal"> 7</span>
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<span class="normal"> 9</span>
<span class="normal">10</span>
<span class="normal">11</span>
<span class="normal">12</span>
<span class="normal">13</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">EXCEPT</span><span class="w"> </span><span class="k">RULE</span><span class="w"> </span><span class="n">except_rule_name</span>
<span class="w"> </span><span class="k">WITH</span><span class="w"> </span><span class="p">(</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">BLOCKTIME</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">CPUTIME</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">ELAPSEDTIME</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span><span class="w"> </span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">CPUSKEWPERCENT</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">SPILLSIZE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">BROADCASTSIZE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">MEMSIZE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">CPUAVGPERCENT</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">BANDWIDTH</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">VALUE</span><span class="p">,</span>
<span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">ACTION</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[</span><span class="s1">'abort'</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="s1">'penalty'</span><span class="p">]</span>
<span class="w"> </span><span class="p">);</span>
</pre></div></td></tr></table></div>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001460881012__s3af932ca438d4159985b0e2e173ebf9d"><h4 class="sectiontitle">Parameter Description</h4><ul id="EN-US_TOPIC_0000001460881012__ul63681331144619"><li id="EN-US_TOPIC_0000001460881012__lfde7b0ce8c3c4a5db0f3b2fc758835d7"><strong id="EN-US_TOPIC_0000001460881012__b95138267264">rule_name</strong><p id="EN-US_TOPIC_0000001460881012__p2018433855115">Name of an exception rule set.</p>
<p id="EN-US_TOPIC_0000001460881012__ad6abc158ac654e4695c2673e7abbb344">Value range: a string of 1 to 64 characters. It must comply with the naming convention.</p>
</li></ul>
<ul id="EN-US_TOPIC_0000001460881012__ue04df989bfb94df7b21de1f71b56727c"><li id="EN-US_TOPIC_0000001460881012__l7b3eb7d573c345b795328479824cbcac"><strong id="EN-US_TOPIC_0000001460881012__b16814541132619">blocktime</strong><p id="EN-US_TOPIC_0000001460881012__a855815071ce9482a9b571eaa0b62e55d">Maximum duration of job queue blocking, in seconds.</p>
<p id="EN-US_TOPIC_0000001460881012__ac7accc73617e4d09838c7e11aac86c19">Value range: -1, 1~INT64_MAX</p>
</li><li id="EN-US_TOPIC_0000001460881012__li1431012165011"><strong id="EN-US_TOPIC_0000001460881012__b42701454182614">elapsedtime</strong><p id="EN-US_TOPIC_0000001460881012__p146241649104916">Maximum job execution duration, in seconds.</p>
<p id="EN-US_TOPIC_0000001460881012__p7624449154919">Value range: -1, 1~INT64_MAX</p>
</li><li id="EN-US_TOPIC_0000001460881012__li154091147473"><strong id="EN-US_TOPIC_0000001460881012__b1489735712262">allcputime</strong><p id="EN-US_TOPIC_0000001460881012__p1478112286502">Maximum CPU time used during job running. The unit is second.</p>
<p id="EN-US_TOPIC_0000001460881012__p4781182885015">Value range: -1, 1~INT64_MAX</p>
</li><li id="EN-US_TOPIC_0000001460881012__li5446318154715"><strong id="EN-US_TOPIC_0000001460881012__b489017216277">cpuskewpercent</strong><p id="EN-US_TOPIC_0000001460881012__p5389153225317">Average CPU usage during job execution. The unit is percentage.</p>
<p id="EN-US_TOPIC_0000001460881012__p138917322534">Value range: -1, 1-100.</p>
</li><li id="EN-US_TOPIC_0000001460881012__li732665519503"><strong id="EN-US_TOPIC_0000001460881012__b1728177112718">cpuavgpercent</strong><p id="EN-US_TOPIC_0000001460881012__p63451547155011">CPU usage skew during job execution. The unit is percentage.</p>
<p id="EN-US_TOPIC_0000001460881012__p13488105595010">Value range: -1, 1-100.</p>
</li><li id="EN-US_TOPIC_0000001460881012__li8500132414717"><strong id="EN-US_TOPIC_0000001460881012__b168295107270">spillsize</strong><p id="EN-US_TOPIC_0000001460881012__p1662013344504">Maximum size of data spilled to disks during job execution. The unit is MB.</p>
<p id="EN-US_TOPIC_0000001460881012__p2620133435014">Value range: -1, 1~INT64_MAX</p>
</li><li id="EN-US_TOPIC_0000001460881012__li17681228124711"><strong id="EN-US_TOPIC_0000001460881012__b196613145271">broadcastsize</strong><p id="EN-US_TOPIC_0000001460881012__p10452143713501">Maximum broadcast size of a job. The unit is MB.</p>
<p id="EN-US_TOPIC_0000001460881012__p34521037175013">Value range: -1, 1~INT64_MAX</p>
</li><li id="EN-US_TOPIC_0000001460881012__li10833331154712"><strong id="EN-US_TOPIC_0000001460881012__b374021817272">memsize</strong><p id="EN-US_TOPIC_0000001460881012__p7172047191513">Maximum memory size used for job execution. Unit: MB.</p>
<p id="EN-US_TOPIC_0000001460881012__p717210476153">Value range: -1, 1~INT64_MAX</p>
</li><li id="EN-US_TOPIC_0000001460881012__li1654416596483">bandwidth<p id="EN-US_TOPIC_0000001460881012__p0544185934814"><a name="EN-US_TOPIC_0000001460881012__li1654416596483"></a><a name="li1654416596483"></a>Maximum bandwidth that can be used for job execution. Unit: MB.</p>
<p id="EN-US_TOPIC_0000001460881012__p1354412598485">Value range: -1, 1~INT64_MAX</p>
</li></ul>
</div>
<div class="section" id="EN-US_TOPIC_0000001460881012__section370345415718"><h4 class="sectiontitle">Examples</h4><p id="EN-US_TOPIC_0000001460881012__p1125691913019">Create exception rule set <strong id="EN-US_TOPIC_0000001460881012__b5181162617367">except_rule1</strong> and set the <strong id="EN-US_TOPIC_0000001460881012__b19996450113714">blocktime</strong> threshold to <strong id="EN-US_TOPIC_0000001460881012__b1140465123612">3000 seconds</strong>, and spilling space to <strong id="EN-US_TOPIC_0000001460881012__b919510811374">4000 MB</strong>.</p>
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001460881012__screen154144343012"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">EXCEPT</span><span class="w"> </span><span class="k">RULE</span><span class="w"> </span><span class="n">except_rule1</span><span class="w"> </span><span class="k">WITH</span><span class="w"> </span><span class="p">(</span><span class="n">blocktime</span><span class="o">=</span><span class="mi">3000</span><span class="p">,</span><span class="w"> </span><span class="n">spillsize</span><span class="o">=</span><span class="mi">4000</span><span class="p">,</span><span class="w"> </span><span class="n">action</span><span class="o">=</span><span class="k">abort</span><span class="p">);</span>
</pre></div></td></tr></table></div>
</div>
<p id="EN-US_TOPIC_0000001460881012__p1922044793016">Create an exception rule set <strong id="EN-US_TOPIC_0000001460881012__b2171525153720">except_rule2</strong> and set the <strong id="EN-US_TOPIC_0000001460881012__b413564743715">memsize</strong> threshold to <strong id="EN-US_TOPIC_0000001460881012__b43789575376">5000 MB</strong>. The default operation following an exception is <strong id="EN-US_TOPIC_0000001460881012__b944210317381">abort</strong>.</p>
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001460881012__screen6321053203115"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="k">EXCEPT</span><span class="w"> </span><span class="k">RULE</span><span class="w"> </span><span class="n">except_rule2</span><span class="w"> </span><span class="k">WITH</span><span class="w"> </span><span class="p">(</span><span class="n">memsize</span><span class="o">=</span><span class="mi">3000</span><span class="p">);</span>
</pre></div></td></tr></table></div>
</div>
<p id="EN-US_TOPIC_0000001460881012__p166021316217">Create a resource pool and bind it to exception rule set <strong id="EN-US_TOPIC_0000001460881012__b134445422382">except_rule3</strong>.</p>
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001460881012__screen86021172113"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span></pre></div></td><td class="code"><div><pre><span></span><span class="k">CREATE</span><span class="w"> </span><span class="n">resource</span><span class="w"> </span><span class="n">pool</span><span class="w"> </span><span class="n">resource_pool_a1</span><span class="w"> </span><span class="k">WITH</span><span class="w"> </span><span class="p">(</span><span class="n">except_rule</span><span class="o">=</span><span class="s1">'except_rule3'</span><span class="p">);</span>
</pre></div></td></tr></table></div>
</div>
</div>
<div class="section" id="EN-US_TOPIC_0000001460881012__section1952411183338"><h4 class="sectiontitle">Helpful Links</h4><p id="EN-US_TOPIC_0000001460881012__p20449162103314"><a href="dws_06_0280.html">ALTER EXCEPT RULE</a>, <a href="dws_06_0282.html">DROP EXCEPT RULE</a></p>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_06_0118.html">DDL Syntax</a></div>
</div>
</div>
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