From: | Louis-David Mitterrand <cunctator(at)apartia(dot)ch> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | sum of agreggates in one SELECT? |
Date: | 2000-09-19 10:58:59 |
Message-ID: | 20000919125859.A2802@styx |
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Lists: | pgsql-sql |
Hello,
I have the following query/result:
auction=# select max(b.lot) as quantity,max(b.price) as price,p.login from bid b, person p where b.auction_id = 84 and p.id = b.person_id group by p.login order by max(price);
quantity | price | login
----------+-------+-----------
1 | 5000 | papy
12 | 5750 | cunctator
8 | 6000 | vindex
(3 rows)
Now I would like to sum() all results from the quantity column and
return it with one SELECT statement. Is that possible?
I am trying:
auction=# select sum(b.lot) from bid b, person p where b.auction_id = 84 and p.id = b.person_id ;
sum
-----
52
(1 row)
But this is wrong because it sums all quantities. I don't know how to
apply a valid WHERE clause in that case.
Thanks in advance for any help, cheers,
--
Louis-David Mitterrand - ldm(at)apartia(dot)org - http://www.apartia.org
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