单项选择题
A.DELETE FROM R WHRER NAME LIKE'李%' B.DELETE ALL FROM R WHERE NAME='李' C.DELETE WHERE NAME='李' D.REVOKE ALL FROM R WHERE NAME LIKE'李'
A.SELECT B.GRANT、REVOKE C.CREATE、DROP、ALTER D.INSERT、UPDATE、DELETE
A.投影 B.选择 C.连接 D.交