RENAME (Table Renaming)

The statement for renaming a table in MySQL is slightly different from that in GaussDB(DWS). DSC will perform adaptation based on GaussDB(DWS) features during migration.

1. MySQL uses the RENAME TABLE statement to change a table name.

   Input

   # Rename a single table. 
   RENAME TABLE DEPARTMENT TO NEWDEPT;
   
    # Rename multiple tables. 
   RENAME TABLE NEWDEPT TO NEWDEPT_02,PEOPLE TO PEOPLE_02;

   Output

   -- Rename a single table. 
   ALTER TABLE "public"."department" RENAME TO "newdept";
   
   -- Rename multiple tables. 
   ALTER TABLE "public"."newdept" RENAME TO "newdept_02";
   ALTER TABLE "public"."people" RENAME TO "people_02";

2. In MySQL, the ALTER TABLE RENAME statement is used to change a table name. When this statement is migrated by DSC, the keyword AS is converted to TO.

   Input

   ## A.
   ALTER TABLE runoob_alter_test RENAME TO runoob_alter_testnew;
   
   ## B.
   ALTER TABLE runoob_alter_testnew RENAME AS runoob_alter_testnewnew;

   Output

   -- A.
   ALTER TABLE "public"."runoob_alter_test" RENAME TO "runoob_alter_testnew";
   
   -- B.
   ALTER TABLE "public"."runoob_alter_testnew" RENAME TO "runoob_alter_testnewnew";