Howdy , Michele,
Give this a try
SELECT id_user
FROM t_your_table
WHERE datetime
BETWEEN A -- plug here beginning of interval
AND B -- and end here
GROUP BY id_user
HAVING COUNT(*) = -SUM(value)
Then tell me if it gives you what you want
Best,
Oliveiros Cristina
----- Original Message -----
From: "Michele Petrazzo - Unipex" <michele.petra...@unipex.it>
To: <pgsql-sql@postgresql.org>
Sent: Friday, September 17, 2010 3:50 PM
Subject: [SQL] all the table values equal
Hi list,
this is a Friday afternoon question... :)
I have a table like this:
id_user | value | datetime
1 | 1 | xxx
1 | 2 | xxx+1
1 | -1 | xxx+2
2 | -1 | xxx
2 | -1 | xxx+1
3 | 4 | xxx
3 | 10 | xxx+1
I'm trying to create a query that say me which id_user, inside a
interval of time, has all the values -1
The part if the interval it's not a problem, but I'm fighting with the
aggregate...
Someone?
Thanks,
Michele
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