CONNECTION¶
GaussDB(DWS) does not support table definition modification using this attribute. DSC will delete the attribute during migration.
Caution
In MySQL, the keyword CONNECTION is used as a referenced, external data source. Currently, DSC cannot completely migrate the feature of CONNECTION. So as a workaround, it simply deletes the keyword.
Input
CREATE TABLE `public`.`runoob_alter_test`(
`dataType1` int NOT NULL AUTO_INCREMENT,
`dataType2` DOUBLE(20,8),
`dataType3` TEXT NOT NULL,
`dataType4` YEAR NOT NULL DEFAULT '2018',
PRIMARY KEY(`dataType1`)
);
ALTER TABLE runoob_alter_test CONNECTION 'hello';
ALTER TABLE runoob_alter_test CONNECTION='hello';
Output
CREATE TABLE "public"."runoob_alter_test"
(
"datatype1" SERIAL NOT NULL,
"datatype2" DOUBLE PRECISION,
"datatype3" TEXT NOT NULL,
"datatype4" SMALLINT NOT NULL DEFAULT '2018',
PRIMARY KEY ("datatype1")
)
WITH ( ORIENTATION = ROW, COMPRESSION = NO )
NOCOMPRESS
DISTRIBUTE BY HASH ("datatype1");