| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | Patrick B <patrickbakerbr(at)gmail(dot)com> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: count case when - PG 9.2 |
| Date: | 2017-03-09 05:02:40 |
| Message-ID: | CAKFQuwa4i4bkG1retbTrUFOOZJQ8aHHWjfGqvMMZogWvPOsb4w@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-general |
On Wednesday, March 8, 2017, Patrick B <patrickbakerbr(at)gmail(dot)com> wrote:
> Hi guys. How can I count using 'CASE WHEN'?
>
> Example:
>
> SELECT
>
> CASE
>
> WHEN AND c.regdate > EXTRACT(epoch FROM (now() - INTERVAL '14
> day'))
>
> THEN 'trial'
>
> WHEN last_pay > EXTRACT(epoch FROM (now() - INTERVAL '37 day'))
>
> THEN 'paying'
>
> END as account_status,
>
> c.id
>
> FROM public.clients c
>
> WHERE (
>
> (last_pay > EXTRACT('epoch' FROM now() - '12
> Months'::INTERVAL))
>
> )
>
> ORDER BY 1
>
> I wanna know how many of 'trial' and 'paying' customers the query returns.
> can you guys please advice how to do it?
>
> Thanks
> Patrick
>
Turn that into a subquery and group by...
David J.
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