?? 4.4.3.sql
字號(hào):
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ
BEGIN TRAN
SELECT * FROM TEACHERS WHERE TID='200003125'
WAITFOR DELAY '00:00:05'
UPDATE TEACHERS SET SALARY=4000 WHERE TID='200003125'
COMMIT TRAN
SELECT * FROM TEACHERS WHERE TID='200003125'
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