查詢每門課都大於80分的學生姓名

思路就是反過來想就簡單了

 

最后一句這樣寫就意思明顯 SELECT distinct name from (select  name from zzxxz where score<=80)

 

 

select distinct name from zzxxz where name not in
(select distinct name from zzxxz where score<=80)