select * from score a where sno in (
select sno from score group by sno having count(*)>1) --子查询 选多门课的同学
and degree<(select max(degree) from score b where a.cno=b.cno ) --非最高分
select * from score a where sno in (
select sno from score group by sno having count(*)>1) --子查询 选多门课的同学
and degree<(select max(degree) from score b where a.cno=b.cno ) --非最高分
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