ALTER TABLE "SYSTEM_ROLE_MENU" ADD COLUMN "SHOW_MENU" BIT DEFAULT ('1') NOT NULL; COMMENT ON COLUMN "SYSTEM_ROLE_MENU"."SHOW_MENU" IS '是否显示菜单'; CREATE INDEX "IDX_SYSTEM_ROLE_ID_AND_MENU_ID" ON "SYSTEM_ROLE_MENU"(ROLE_ID,MENU_ID);