From: Hélder M. Vieira <hmv@mail.telepac.pt>
To: pgsql-sql@postgresql.org
Subject: Re: Having the sum of two queries
Date: Mon, 16 Jul 2007 23:00:47 +0100
Message-ID: <001401c7c7f4$c4515280$6200a8c0@hmv02> (raw)
References: <469B512D.70507@gmail.com>
>... SELECT tot.status, COUNT(total)
> FROM( QUERY A UNION QUERY B ) AS tot
> GROUP BY tot.status
>
> But it doesn't works. It doesn't add the total columns with the same
> status...
>...
I guess you have two problems, if I understand what you're trying to do.
- As Roberto Spier noted, 'sum' would be better than 'count' in the outer
query.
- Also, 'union' will silently remove duplicate rows, unless you use 'union
all'.
Please check if this is what you want:
select status, count(status)
from
(
select status from users
union all
select status from imported_users
) as fff
group by status;
Regards,
´
Helder M. Vieira
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Cc: hmv@mail.telepac.pt
Subject: Re: Having the sum of two queries
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