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问题2
select b.cn,b.t from
(select count(1) cn,t from a
where t between t and t+10/24/60/60
group by t) b
where b.cn>n
order by b.cn
问题2
select b.cn,b.t from
(select count(1) cn,t from a
where t between t and t+10/24/60/60
group by t) b
where b.cn>n
order by b.cn
解决方案 »
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