更新时间:2024-06-29 GMT+08:00
DELAY_KEY_WRITE
DELAY_KEY_WRITE只对MyISAM引擎表有作用,根据DELAY_KEY_WRITE的值来延迟更新直至表关闭。GaussDB(DWS)不支持该属性修改表定义信息,DSC迁移时会将该属性删除。
输入示例
1 2 3 4 5 6 7 8 |
CREATE TABLE `public`.`runoob_tbl_test`( `runoob_id` VARCHAR(30), `runoob_title` VARCHAR(100) NOT NULL, `runoob_author` VARCHAR(40) NOT NULL, `submission_date` VARCHAR(30) ) ENGINE=MyISAM, DELAY_KEY_WRITE=0; ALTER TABLE `public`.`runoob_tbl_test6` DELAY_KEY_WRITE=1; |
输出示例
1 2 3 4 5 6 7 8 9 10 |
CREATE TABLE "public"."runoob_tbl_test" ( "runoob_id" VARCHAR(120), "runoob_title" VARCHAR(400) NOT NULL, "runoob_author" VARCHAR(160) NOT NULL, "submission_date" VARCHAR(120) ) WITH ( ORIENTATION = ROW, COMPRESSION = NO ) NOCOMPRESS DISTRIBUTE BY HASH ("runoob_id"); |
父主题: 表(可选参数、操作)