oracle按每天,每周,每月,每季度,每年查询统计数据

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//按天统计


select count(dataid) as 每天操作数量, sum()


from tablename


group by trunc(createtime, 'DD'))


//按自然周统计
select to_char(date,'iw'),sum()
from  tablename
group by to_char(date,'iw')


//按自然月统计
select to_char(date,'mm'),sum()
from   tablename
group by to_char(date,'mm')


//按季统计
select to_char(date,'q'),sum()
from  tablename
group by to_char(date,'q')


//按年统计
select to_char(date,'yyyy'),sum()
from  tablename
group by to_char(date,'yyyy')

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fteair

张兴康

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