设有学生选课表SC(学号,课程号,成绩),用SQL检索同时选修课程号为“C1”“C5”的学生的学号的正确命令是
发布时间:2024-07-09
A.SELECT学号FROM SC WHERE 课程号=“C1”AND课程号=“C5”
B.SELECT学号FROM SC WHERE 课程号=“C1”AND课程号=(SELECT课程号 FROM SC WHERE 课程号=“C5”)
C.SELECT学号FROM SC WHERE 课程号=“C1”AND学号=(SELECT学号 FROM SC WHERE 课程号=“C5”)
D.SELECT学号FROM SC WHERE 课程号=“C1”AND学号 IN (SELECT学号 FROM SC WHERE 课程号=“C5”)
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