Update 关系型数据库MySQL.md
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@ -401,7 +401,7 @@
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-- 查询选了两门以上的课程的学生姓名(子查询/分组条件/集合运算)
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select stuname from tb_student where stuid=(
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select stuname from tb_student where stuid=any(
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select stuid from tb_score group by stuid having count(stuid)>2
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)
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