| From: | BladeOfLight16 <bladeoflight16(at)gmail(dot)com> |
|---|---|
| To: | "janek12(at)web(dot)de" <janek12(at)web(dot)de> |
| Cc: | "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Sum of columns |
| Date: | 2013-09-12 23:58:11 |
| Message-ID: | CA+=1U=U7vQ1rXr4mqEttjXQRVw0iyC8b19epfKTmGQBJTATccQ@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-general |
On Mon, Sep 9, 2013 at 8:12 AM, Marc Mamin <M(dot)Mamin(at)intershop(dot)de> wrote:
> hi,
>
> in addition to the others comments, you can also remove " ELSE 0 " from
> your query.****
>
> It will result in <NULL> values that are discarded by SUM.****
>
>
For that matter, you could clean this up by using COUNT as your aggregate
with a GROUP BY. See these two archives:
http://www.postgresql.org/message-id/CA+=1U=U-=OQv6P24PP7HrO3dvAf3mH-oELTT7+F7RWZsC1XkMQ@mail.gmail.com
http://www.postgresql.org/message-id/1377525567350-5768573.post@n5.nabble.com
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