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能够实现“收回用户U4对学生表(STUD)中学号(XH)的修改权”的SQL语句是()。

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REVOKE UPDATE(XH) ON TABLE FROM ZHAO  REVOKE UPDATE(XH) ON TABLE FROM PUBLIC  REVOKE UPDATE(XH) ON STUD FROM ZHAO  REVOKE UPDATE(XH) ON STUD FROM PUBLIC  
REVOKE UPDATE (X ON TABLE FROM USER4;  REVOKE UPDATE (X ON TABLE STUD FROM PUBLIC;  REVOKE UPDATE (X ON TABLE STUD FROM USER4;  REVOKE ALL PRIVILEGES ON TABLE STUD FROM USER4;  
GRANT UPDATE(XH) ON STUDENT TO WANG  GRANT UPDATE(XH) ON TABLE TO WANG  REVOKE UPDATE(XH) ON STUDENT FROM WANG  REVOKE UPDATE(XH) ON TABLE TO WANG  
ALTER TABLE STUD ADD XH UNIQUE  ALTER TABLE STUD MODIFY XHUNIQUE  ALTER TABLE STUD DROP UNIQUE(XH)  ALTER TABLE STUD MODIFY UNIQUE(XH)  
REVOKE UPDAE(XON TABLE FROM U4  REVOKE UPDAE(XON TABLE STUD FROM PUBLIC  REVOKE UPDAE(XON TABLE STUD FROM U4  REVOKE ALL PRIVILEGES ON TABLE FROM U4  
REVOKE UPDATE(X ON TABLE FROM U4  REVOKE UPDATE(X ON TABLE STUD FROM PUBLIC  REVOKE UPDATE (X ON TABLE STUD FROM U4  REVOKE ALL PRIVILEGES ON TABLE STUD FROM U4  
ALTER TABLE STUD ADD XH UNIQUE  ALTER TABLE STUD MODIFY XH UNIQUE  ALTER TABLE STUD DROP UNIQUE(XH)  ALTER TABLE STUD MODIFY UNIQUE(X  
REVOKE UPDATE(XH) ON TABLE FROM U4  REVOKE UPDATE(XH) ON TABLE STUD FROM PUBLIC  REVOKE UPDATE (XH) ON TABLE STUD FROM U4  REVOKE ALL PRIVILEGES ON TABLE STUD FROM U4  
REVOKE UPDATE (XH)  ON TABLE FROM USER4;  REVOKE UPDATE (XH)  ON TABLE STUD FROM PUBLIC;  REVOKE UPDATE (XH)  ON TABLE STUD FROM USER4;  REVOKE ALL PRIVILEGES  ON TABLE STUD FROM USER4;  
GRANT UPDATE(XH) ON STUDENT TO WANG  GRANT UPDATE(XH) ON TABLE TO WANG  REVOKE UPDATE(XH) ON STUDENT FROM WANG  REVOKE UPDATE(XH) ON TABLE FROM WANG  
REVOKE UPDATE (XH)
ON TABLE FROM USER4;  
REVOKE UPDATE (XH)
ON TABLE STUD FROM PUBLIC ;  
REVOKE UPDATE (XH)
ON TABLE STUD FROM USER4;  
REVOKE ALL PRIVILEGES
ON TABLE STUD FROM USER4;  
REVOKE UPDATE(XH)ON TABLE FROM U4;  REVOKE UPDATE(XH)ON TABLE STUD FROM PUBLIC;  REVOKE UPDATE(XH)ON TABLE STUD FROM U4;  REVOKE ALL PRIVIL EGES ON TABLE FROM U4;  
REVOKE UPDATE(XON TABLE FROM U4  REVOKE UPDATE(XON TABLE STUD FROM PUBLIC  REVOKE UPDATE(XON TABLE STUD FROM U4  REVOKE ALL PRIVILEGES ON TABLE STUD FROM U4  
REVOKE UPDATE(XH)ON TABLE FROM U4  REVOKE UPDATE(XH)ON TABLE STUD FROM PUBLIC  REVOKE UPDATE(XH)ON TABLE STUD FROM U4  REVOKE ALL PRIVILEGES ON TABLE STUD FROM U4  
REVOKE UPDATE(XON TABLE FROM U4;  REVOKE UPDATE(XON TABLE STUD FROM PUBLIC;  REVOKE UPDATE(XON TABLE STUD FROM U4;  REVOKE ALL PRIVIL EGES ON TABLE FROM U4;  

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