将STUDENT表中NL列的值都更新为20岁,正确的SQL语句是()
A.UPDATESTUDENTSETNL=21 B.SETSTUDENTUPDATENL=20 C.UPDATESTUDENTSETNL=20 D.1NSERTlNTOSTUDENTSETNL=20正确答案C
将STUDENT表中NL列的值都更新为20岁,正确的SQL语句是()
A.UPDATESTUDENTSETNL=21 B.SETSTUDENTUPDATENL=20 C.UPDATESTUDENTSETNL=20 D.1NSERTlNTOSTUDENTSETNL=20正确答案C