To comment out a single line, MySQL uses # or --, and GaussDB(DWS) uses --. DSC will replace # with -- for commenting out a single line during migration.
Input
## comment sample create a table CREATE TABLE IF NOT EXISTS `public`.`runoob_tbl`( `runoob_id` VARCHAR, `runoob_title` VARCHAR(100) NOT NULL, `runoob_author` VARCHAR(40) NOT NULL, `submission_date` VARCHAR )ENGINE=InnoDB DEFAULT CHARSET=utf8;
Output
-- comment sample create a table CREATE TABLE IF NOT EXISTS "public"."runoob_tbl" ( "runoob_id" VARCHAR, "runoob_title" VARCHAR(400) NOT NULL, "runoob_author" VARCHAR(160) NOT NULL, "submission_date" VARCHAR ) WITH ( ORIENTATION = ROW, COMPRESSION = NO ) NOCOMPRESS DISTRIBUTE BY HASH ("runoob_id");