云服务器内容精选

华为云首页用户手册

表（可选参数、操作）

数据仓库服务 GAUSSDB(DWS)-IF NOT EXISTS

IF NOT EXISTS DSC支持转换 IF NOT EXISTS关键字，迁移过程保留。输入示例 1 2 3 4 5 6 7 8 9 10 DROP TABLE IF EXISTS `categories`; CREATE TABLE IF NOT EXISTS `categories` ( `CategoryID` tinyint(5) unsigned NOT NULL PRIMARY KEY AUTO_INCREMENT, `CategoryName` varchar(15) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL DEFAULT '' , `Description` mediumtext CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL , `Picture` varchar(50) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL DEFAULT '', UNIQUE (`CategoryID`) )ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=latin1; DROP TABLE IF EXISTS `categories`; 输出示例 1 2 3 4 5 6 7 8 DROP TABLE IF EXISTS "public"."categories"; CREATE TABLE IF NOT EXISTS "public"."categories" ( "categoryid" SMALLSERIAL NOT NULL PRIMARY KEY, "categoryname" VARCHAR(60) NOT NULL DEFAULT '', "description" TEXT NOT NULL, "picture" VARCHAR(200) NOT NULL DEFAULT '' ) WITH (ORIENTATION = ROW, COMPRESSION = NO) NOCOMPRESS DISTRIBUTE BY HASH ("categoryid"); DROP TABLE IF EXISTS "public"."categories"; 父主题：表（可选参数、操作）

数据仓库服务 GAUSSDB(DWS) 表（可选参数、操作）
数据仓库服务 GAUSSDB(DWS)-DIRECTORY

DIRECTORY DIRECTORY表示允许在数据目录和索引目录之外创建表空间。DIRECTORY包含DATA DIRECTORY和INDEX DIRECTORY。 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 9 10 11 CREATE TABLE `public`.`runoob_tbl_test1` ( `dataType1` int NOT NULL AUTO_INCREMENT, `dataType2` DOUBLE(20,8), PRIMARY KEY(`dataType1`) ) ENGINE=MYISAM DATA DIRECTORY = 'D:\\input' INDEX DIRECTORY= 'D:\\input'; CREATE TABLE `public`.`runoob_tbl_test2` ( `dataType1` int NOT NULL AUTO_INCREMENT, `dataType2` DOUBLE(20,8), PRIMARY KEY(`dataType1`) ) ENGINE=INNODB DATA DIRECTORY = 'D:\\input'; 输出示例 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 CREATE TABLE "public"."runoob_tbl_test1" ( "datatype1" SERIAL NOT NULL, "datatype2" DOUBLE PRECISION, PRIMARY KEY ("datatype1") ) WITH ( ORIENTATION = ROW, COMPRESSION = NO ) NOCOMPRESS DISTRIBUTE BY HASH ("datatype1"); CREATE TABLE "public"."runoob_tbl_test2" ( "datatype1" SERIAL NOT NULL, "datatype2" DOUBLE PRECISION, PRIMARY KEY ("datatype1") ) WITH ( ORIENTATION = ROW, COMPRESSION = NO ) NOCOMPRESS DISTRIBUTE BY HASH ("datatype1"); 父主题：表（可选参数、操作）

数据仓库服务 GAUSSDB(DWS) 表（可选参数、操作）