摘要:
1、将如下表中的每门成绩都大于80分的人名? select * from tb_stu2;select distinct stu2_name from tb_stu2 where stu2_name not in(select distinct stu2_name from tb_stu2 wher 阅读全文
posted @ 2017-04-10 22:09
月魄
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