寄存器之间的区别

Question

我想在不到72小时的时间内回到我的医院，例如：

id_People    id_issue    internation_in       internation_out
444          456789      2014-01-01      2014-01-07
444          465465      2014-02-10      2014-02-12
444          789564      2014-02-13      2014-02-20

• internation_out之间的区别456789 - internation_in 465465 =少于72hs NO
• internation_out之间的差异465465-internation_in 789564 =少于72hs是

重复次数小于72 hs = 1

Answer 1

如果我理解正确，你想测量某人离开然后返回的时间：

select t.*,
       (case when internation_out + interval '72 hour' >
                  lag(internation_out) over (partition by id_people order by internaion_in)
             then 'YES'
             else 'NO'
        end)
from table t;