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>
66 lines
4.2 KiB
HTML
66 lines
4.2 KiB
HTML
<a name="EN-US_TOPIC_0000001819416233"></a><a name="EN-US_TOPIC_0000001819416233"></a>
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<h1 class="topictitle1">ROW_FORMAT</h1>
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<div id="body8662426"><p id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_en-us_topic_0214164761_p579713312318"><strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b15641708783224">ROW_FORMAT</strong> defines the physical format in which the rows are stored. Row format choices vary depending on the storage engine used for the table. If you specify a row format that is not supported by the storage engine that is used for the table, the table will be created using that storage engine's default row format. If <strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b18732995373224">ROW_FORMAT</strong> is set to <strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b12219384953224">DEFAULT</strong>, the value will be migrated to <strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b1536498243224">SET NOCOMPRESS</strong>. If <strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b8064526663224">ROW_FORMAT</strong> is set to <strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b5005847453224">COMPRESSED</strong>, the value will be migrated to <strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b21396426493224">SET COMPRESS</strong>. GaussDB(DWS) supports only the preceding two <strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_b9551188083224">ROW_FORMAT</strong> values. If other values are used, they will be deleted by DSC.</p>
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<p id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_en-us_topic_0214164761_p1634512101858"><strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_en-us_topic_0214164761_b2694115616557">Input</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_en-us_topic_0214164761_screen153713219158">CREATE TABLE `public`.`runoob_alter_test`(
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`dataType1` int NOT NULL AUTO_INCREMENT,
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`dataType2` FLOAT(10,2),
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`dataType3` DOUBLE(20,8),
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`dataType4` TEXT NOT NULL,
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PRIMARY KEY(`dataType1`)
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) ENGINE=InnoDB;
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## A.
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ALTER TABLE runoob_alter_test ROW_FORMAT DEFAULT;
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ALTER TABLE runoob_alter_test ROW_FORMAT=DEFAULT;
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## B.
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ALTER TABLE runoob_alter_test ROW_FORMAT DYNAMIC;
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ALTER TABLE runoob_alter_test ROW_FORMAT=DYNAMIC;
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## C.
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ALTER TABLE runoob_alter_test ROW_FORMAT COMPRESSED;
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ALTER TABLE runoob_alter_test ROW_FORMAT=COMPRESSED;
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## D.
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ALTER TABLE runoob_alter_test ROW_FORMAT REDUNDANT;
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ALTER TABLE runoob_alter_test ROW_FORMAT=REDUNDANT;
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## E.
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ALTER TABLE runoob_alter_test ROW_FORMAT COMPACT;
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ALTER TABLE runoob_alter_test ROW_FORMAT=COMPACT;</pre>
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<p id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_en-us_topic_0214164761_p12114173518210"><strong id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_en-us_topic_0214164761_b1691200195611">Output</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001819416233__en-us_topic_0000001657865338_en-us_topic_0000001435896189_en-us_topic_0214164761_screen13966133461520">CREATE TABLE "public"."runoob_alter_test"
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(
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"datatype1" SERIAL NOT NULL,
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"datatype2" REAL,
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"datatype3" DOUBLE PRECISION,
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"datatype4" TEXT NOT NULL,
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PRIMARY KEY ("datatype1")
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)
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WITH ( ORIENTATION = ROW, COMPRESSION = NO )
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NOCOMPRESS
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DISTRIBUTE BY HASH ("datatype1");
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-- A.
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ALTER TABLE "public"."runoob_alter_test" SET NOCOMPRESS;
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ALTER TABLE "public"."runoob_alter_test" SET NOCOMPRESS;
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-- B.
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-- C.
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ALTER TABLE "public"."runoob_alter_test" SET COMPRESS;
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ALTER TABLE "public"."runoob_alter_test" SET COMPRESS;
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-- D.
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-- E.</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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