En liten summering
Hur får jag till differensen i dagar mellan Out_Time och Ret_Time
samt får en summering av dessa dagar?
SELECT Out_Time, Ret_Time, PClass, PType
FROM Contr_ObjT
WHERE (PType = 'A1')
Så här ser resultat ut nu.
2004-11-24 10:30:00 2004-11-30 10:30:00 E A1
2004-11-26 16:00:00 2004-11-29 16:55:00 G A1
2004-11-29 16:20:00 2004-11-30 06:00:00 I A1
2004-12-01 07:40:00 2004-12-02 07:30:00 I A1
2004-12-02 07:30:00 2004-12-06 09:05:00 I A1
2004-12-03 07:40:00 2004-12-04 09:30:00 I A1
select out_time
, ret_time
, pclass
, ptype
, datediff(day,out_time,ret_time) as d
, ( select sum(datediff(day,out_time,ret_time))
from contr_objt
where ptype = 'A1' ) as s
from contr_objt
where ptype = 'A1'