Help Center> Data Warehouse Service (DWS)> Tool Guide> DSC> SQL Syntax Migration Reference> MySQL Syntax Migrating> Schema Objects and Data Definition Language (DDL)> Table (Optional Parameters and Operations)> FOREIGN_KEY_CHECKS
Updated on 2024-04-28 GMT+08:00
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FOREIGN_KEY_CHECKS

For foreign key constraints in MySQL, GaussDB(DWS) does not support them modifying table definition. They will be deleted during DSC migration.

Input

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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

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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");