From: | Kenneth Suralta <ksuralta(at)ntsp(dot)nec(dot)co(dot)jp> |
---|---|
To: | Gergely Czuczy <phoemix(at)harmless(dot)hu> |
Cc: | Kenneth Suralta <ksuralta(at)ntsp(dot)nec(dot)co(dot)jp>, pgsql-interfaces(at)postgresql(dot)org |
Subject: | Re: help on SQL |
Date: | 2004-04-21 07:50:07 |
Message-ID: | 408627AF.2020204@hq.ntsp.nec.co.jp |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-interfaces |
hi gergely,
thanks for replying..
what i mean is supposing there is a table with the following rows:
data
-----
1
2
3
4
5
6
7
is it possible to get every other N-row in the table?
example, if N is 3.
data
-----
1
4
7
thanks,
kenneth
Gergely Czuczy wrote:
On Wed, 21 Apr 2004, Kenneth Suralta wrote:
hello everyone,
is it possible to get every other row in the table?
like for example:
data
-----
1
2
3
4
5
6
7
SELECT t.fields FROM table t WHERE data NOT IN (SELECT t2.data FROM table
t2 WHERE some_whereclause);
it will select these rows which ones are not in the subquery. but you can
do it simply by getting the negate of the whereclause...
Is it possible to have this result (interval of 3)?
result
------
1
4
7
i don't see what you mean. please describe it.
thanks,
kenneth
--
---------------------------(end of broadcast)---------------------------
TIP 4: Don't 'kill -9' the postmaster
Bye,
Gergely Czuczy
mailto: phoemix(at)harmless(dot)hu
PGP: http://phoemix.harmless.hu/phoemix.pgp
"Wish a god, a star, to believe in,
With the realm of king of fantasy..."
---------------------------(end of broadcast)---------------------------
TIP 2: you can get off all lists at once with the unregister command
(send "unregister YourEmailAddressHere" to majordomo(at)postgresql(dot)org)
--
From | Date | Subject | |
---|---|---|---|
Next Message | Michael Stephenson | 2004-04-21 09:54:10 | Re: help on SQL |
Previous Message | Gergely Czuczy | 2004-04-21 07:42:31 | Re: help on SQL |