计算两个日期之间的天数,不包括周末 [英] Count days between two dates excluding weekends
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问题描述
如何找到DB2中两个日期之间的差额(不包括周末)?
How can I find the difference between two dates in DB2 (excluding weekends)?
在DB2中是否有任何函数可以做到这一点?还是我需要自己编写查询?
Are there any functions that will do this in DB2? Or do I need to write a query myself?
推荐答案
没有AFAIK这样的功能。但是,编写查询来计算该值很容易:
There is AFAIK no such function. It is however easy to write a query that calculates this:
with cal(d) as (
values date('2015-01-01') -- start_date
union all
select d + 1 day from cal
where d < '2015-01-15' -- end_date
) select count(case when dayofweek(d) between 2 and 6 then 1 end)
from cal;
如果您进行了大量此类计算,则可能要创建日历表,则可以在此表中添加国定假日等属性。
If you do a lot of these kind of calculations you might want to create a calendar table, you can add attributes like national holiday etc to this table.
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