BEGIN 
BEGIN 
BEGIN 
BEGIN  ISOLATION LEVEL read committed
BEGIN  ISOLATION LEVEL serializable
BEGIN READ WRITE 
BEGIN READ ONLY 
START TRANSACTION 
COMMIT 
COMMIT 
COMMIT 
COMMIT 
COMMIT 
COMMIT 
ABORT 
ABORT 
ABORT 
ABORT 
ABORT 
ABORT 
SET TRANSACTION  ISOLATION LEVEL read committed
SET TRANSACTION  ISOLATION LEVEL serializable
SET SESSION CHARACTERISTICS AS TRANSACTION  ISOLATION LEVEL read committed
SET SESSION CHARACTERISTICS AS TRANSACTION  ISOLATION LEVEL serializable
SET CONSTRAINTS ALL DEFERRED
SET CONSTRAINTS ALL IMMEDIATE
SET CONSTRAINTS "x" DEFERRED
SET CONSTRAINTS "x" IMMEDIATE
LOCK TABLE "t1","t2" IN ACCESS EXCLUSIVE MODE
LOCK TABLE "t1","t2" IN ACCESS EXCLUSIVE MODE
LOCK TABLE "t1","t2" IN ACCESS SHARE MODE
LOCK TABLE "t1","t2" IN ROW SHARE MODE
LOCK TABLE "t1","t2" IN ROW EXCLUSIVE MODE
LOCK TABLE "t1","t2" IN SHARE UPDATE EXCLUSIVE MODE
LOCK TABLE "t1","t2" IN SHARE MODE
LOCK TABLE "t1","t2" IN SHARE ROW EXCLUSIVE MODE
LOCK TABLE "t1","t2" IN EXCLUSIVE MODE
LOCK TABLE "t1","t2" IN ACCESS EXCLUSIVE MODE