內容如圖～蟹蟹蟹蟹蟹蟹
uj5u.com熱心網友回復：
大佬們嫌這太簡單嘛
uj5u.com熱心網友回復：
大佬們希望你自己能勤快點。。。
uj5u.com熱心網友回復：
知識儲備不足，做不出來
uj5u.com熱心網友回復：
第三題select subject_name,student_name,class_name,score from t_studten,t_class,t_student_score,t_subject where
t_subject.subject_id=t_student_score.subject_id and
t_studten.student_id=t_student_score.student_id and
(subject_name,score) in
(select subject_name, max(score) from t_student_score a,t_subject b where a.subject_id=b.subject_id group by subject_name)
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標籤：認證與考試