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from 表b t
where exists (select 1 from 表a where not exists (select 1 from 表b where name=t.name and typeid=表a.id ))
from b
group by name
having count(distinct typeid)<5
from b
group by name
having count(distinct typeid)<5 +1
where exists(seldct 1 from a where not exists(seldct 1 from
b where name=t.name and typeid=a.id);