START TRANSACTION;
START TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
START TRANSACTION ISOLATION LEVEL READ COMMITTED;
START TRANSACTION ISOLATION LEVEL REPEATABLE READ;
START TRANSACTION ISOLATION LEVEL SERIALIZABLE;
START TRANSACTION READ ONLY;
START TRANSACTION READ WRITE;
START TRANSACTION ISOLATION LEVEL READ COMMITTED, READ ONLY;
START TRANSACTION READ ONLY, ISOLATION LEVEL READ COMMITTED;
START TRANSACTION READ WRITE, ISOLATION LEVEL SERIALIZABLE;