Re: Getting the count(*) from two tables and two date ranges in same query

Поиск
Список
Период
Сортировка
От Adam Rich
Тема Re: Getting the count(*) from two tables and two date ranges in same query
Дата
Msg-id 020b01c861b9$345467d0$9cfd3770$@r@sbcglobal.net
обсуждение исходный текст
Ответ на Getting the count(*) from two tables and two date ranges in same query  (Håkan Jacobsson <hakan.jacobsson@relevanttraffic.com>)
Ответы Re: Getting the count(*) from two tables and two date ranges in same query  (nathan wagner <nw@hydaspes.if.org>)
Re: Getting the count(*) from two tables and two date ranges in same query  (Håkan Jacobsson <hakan.jacobsson@relevanttraffic.com>)
Список pgsql-general
> Resulting in 4 columns in the ResultSet like:
>
> count(*)_from_table2_between_fromdate1_and_todate1  = X
> count(*)_from_table2_between_fromdate2_and_todate2  = Y
> count(*)_from_table3_between_fromdate1_and_todate1 = Z
> count(*)_from_table3_between_fromdate2_and_todate2  = V
>
> Is this possible?


Select t1.id,
sum(case when t2.date between d1 and d2 then 1 else 0 end) as sum1,
sum(case when t3.date between d1 and d2 then 1 else 0 end) as sum2
from t1, t2, t3
where t1.id=t2.id and t2.id = t3.id
group by t1.id



В списке pgsql-general по дате отправления:

Предыдущее
От: Håkan Jacobsson
Дата:
Сообщение: Getting the count(*) from two tables and two date ranges in same query
Следующее
От: nathan wagner
Дата:
Сообщение: Re: Getting the count(*) from two tables and two date ranges in same query