欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

Oracle 计算时间格式平均值

程序员文章站 2022-05-23 11:05:41
select to_char((to_date('2019-07-01', 'yyyy-mm-dd') + numtodsinterval(avg(begin_time_second), 'second')),'hh24:mi:ss') avg_begin_time,to_char((to_date ......

select
to_char((to_date('2019-07-01', 'yyyy-mm-dd') + numtodsinterval(avg(begin_time_second), 'second')),'hh24:mi:ss') avg_begin_time,
to_char((to_date('2019-07-01', 'yyyy-mm-dd') + numtodsinterval(avg(end_time_second), 'second')),'hh24:mi:ss') avg_end_time
--2019-07-01 00:00:00 + numtodsinterval(平均数,'秒')转换为日期格式,然后再转换为 时间字符格式
from
(
  select
  --把上班时间换算为秒
  to_char(a.actontime, 'hh24') * 3600 +
  to_char(a.actontime, 'mi') * 60 +
  to_char(a.actontime, 'ss') as begin_time_second,
  --把下班时间换算为秒
  to_char(a.actofftime, 'hh24') * 3600 +
  to_char(a.actofftime, 'mi') * 60 +
  to_char(a.actofftime, 'ss') as end_time_second
  from empworkdate a
)