摘要：
-- 单科最高分是谁select * from topn where sco in (select max(sco) from topn group by clsno);-- 单科最高分是谁select * from topn awhere not exists (select * from top 阅读全文
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摘要：
-- 单科最高分是谁select * from topn where sco in (select max(sco) from topn group by clsno);-- 单科最高分是谁select * from topn awhere not exists (select * from top 阅读全文
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