For foreign key constraints in MySQL, GaussDB(DWS) does not support them modifying table definition. They will be deleted during DSC migration.
Input
set foreign_key_checks = 0; Create Table mall_order_dc ( id bigint NOT NULL AUTO_INCREMENT, order_id varchar(50) NOT NULL, key order_id(order_id) );
Output
CREATE TABLE "public"."mall_order_dc" ( "id" BIGSERIAL NOT NULL, "order_id" VARCHAR(200) NOT NULL ) WITH (ORIENTATION = ROW, COMPRESSION = NO) NOCOMPRESS DISTRIBUTE BY HASH ("id"); CREATE INDEX "order_id" ON "public"."mall_order_dc" USING BTREE ("order_id");