forked from docs/doc-exports
Lu, Huayi
27019c2991
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> 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>
25 lines
2.0 KiB
HTML
25 lines
2.0 KiB
HTML
<a name="EN-US_TOPIC_0000001819416209"></a><a name="EN-US_TOPIC_0000001819416209"></a>
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<h1 class="topictitle1">CLUSTERED KEY</h1>
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<div id="body8662426"><p id="EN-US_TOPIC_0000001819416209__en-us_topic_0000001657865578_en-us_topic_0000001447330941_p8060118">It is a clustered index in ADB that defines the sorting sequence in a table. The logical sequence of key values in a clustered index determines the physical sequence of rows in the table. GaussDB(DWS) does not support table definition modification using this attribute. DSC will delete the keyword during migration.</p>
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<p id="EN-US_TOPIC_0000001819416209__en-us_topic_0000001657865578_en-us_topic_0000001447330941_p239011217817"><strong id="EN-US_TOPIC_0000001819416209__en-us_topic_0000001657865578_en-us_topic_0000001447330941_b163314112814">Input</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001819416209__en-us_topic_0000001657865578_en-us_topic_0000001447330941_screen860331891013">drop table if exists unsupport_parse_test;
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create table `unsupport_parse_test` (
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`username` int,
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clustered key clustered_key(shopid ASC, datetype ASC)
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);
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drop table if exists unsupport_parse_test;</pre>
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<p id="EN-US_TOPIC_0000001819416209__en-us_topic_0000001657865578_en-us_topic_0000001447330941_p057475482"><strong id="EN-US_TOPIC_0000001819416209__en-us_topic_0000001657865578_en-us_topic_0000001447330941_b91981142811">Output</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001819416209__en-us_topic_0000001657865578_en-us_topic_0000001447330941_screen1090715309105">DROP TABLE IF EXISTS "public"."unsupport_parse_test";
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CREATE TABLE "public"."unsupport_parse_test" (
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"username" INTEGER
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) WITH (ORIENTATION = ROW, COMPRESSION = NO) NOCOMPRESS DISTRIBUTE BY HASH ("username");
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DROP TABLE IF EXISTS "public"."unsupport_parse_test";</pre>
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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="dws_16_0119.html">Table (Optional Parameters and Operations)</a></div>
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</div>
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</div>
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