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查询选修了课程号为'C2'的学生号和姓名，若用下列SQL的SELECT语句表达时，哪一个是错误的?
A．SELECT S．S#，SNAME FROM S WHERE S．S#=(SELECT SC．S# FROM SC WHERE C#=‘C2’)
B．SELECT S．S#，SNAME FROM S，SCWHERE S．S#=SC．S#AND C#=‘C2’
C．SELECT S．S#，SNAME FROM S，SCWHERE S. S#=SC．S#AND C#=‘C2’ORDER BY S．S#
D．SELECT S．S#，SNAME FROM S WHERE S．S#IN (SELECT SC．S# FROM SC WHERE C#=‘C2’)
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更多 “ 查询选修了课程号为'C2'的学生号和姓名，若用下列SQL的SELECT语句表达时，哪一个是错误的?A．SELECT S．S#，SNAME FROM S WHERE S．S#=(SELECT SC．S# FROM SC WHERE C#=‘C2’)B．SELECT S．S#，SNAME FROM S，SCWHERE S．S#=SC．S#AND C#=‘C2’C．SELECT S．S#，SNAME FROM S，SCWHERE S. S#=SC．S#AND C#=‘C2’ORDER BY S．S#D．SELECT S．S#，SNAME FROM S WHERE S．S#IN (SELECT SC．S# FROM SC WHERE C#=‘C2’) ” 相关考题
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