一天24小时求Sum(A.Num)
select sum(a.num)
from tab
group by trunc(a.time, 'yyyy-mm-dd')7天的Sum(A.Num)
select max(aaa)
from (
select to_date('2006-01-01','yyyy-mm-dd')+(trunc(a.time-to_date('2006-01-01','yyyy-mm-dd'))/7)*7,sum(a.num) aaa
from tab
group by tName,to_date('2006-01-01','yyyy-mm-dd')+(trunc(a.time-to_date('2006-01-01','yyyy-mm-dd'))/7)*7
)
select sum(a.num)
from tab
group by trunc(a.time, 'yyyy-mm-dd')7天的Sum(A.Num)
select max(aaa)
from (
select to_date('2006-01-01','yyyy-mm-dd')+(trunc(a.time-to_date('2006-01-01','yyyy-mm-dd'))/7)*7,sum(a.num) aaa
from tab
group by tName,to_date('2006-01-01','yyyy-mm-dd')+(trunc(a.time-to_date('2006-01-01','yyyy-mm-dd'))/7)*7
)
解决方案 »
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