使用嵌套查询 得到在SC表中Grade高于90分的学生的基本信息 正确的SQL语句是()。
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使用嵌套查询,得到在SC表中Grade高于90分的学生的基本信息,正确的SQL语句是()。
A.Select * from Student where Sno = (Select Sno from SC where Grade >90)
B.Select * from Student where Sno In (Select Sno from SC where Grade >90)
C.Select * from Student where Sno Not In (Select Sno from SC where Grade >90)
D.Select * from Student where Sno Exists (Select Sno from SC where Grade >90)

