关于一个SQL语用,请大家帮忙想想,100分,只要可用再加100答:select ip,convert(varchar(10),时间,121)+' '+Cast(DATEPART (hh,时间) as varchar(2)) THour ,case when avg(TTL)<100 then avg(TTL)else 0 end [小于100],case when avg(TTL) between 100 and 200 then avg(TTL)else 0 end [100To200],case when avg(TTL)>200 then ...