pg.ddx.io pgsql-sql@postgresql.org mailing list archive
help / color / mirror / Atom feedGet different sums from the same table in one query
5+ messages / 4 participants
[nested] [flat]
* Get different sums from the same table in one query
@ 2007-10-08 10:49 Dani Castaños <danitao.mailists@gmail.com>
0 siblings, 2 replies; 5+ messages in thread
From: Dani Castaños @ 2007-10-08 10:49 UTC (permalink / raw)
To: pgsql-sql
Hi all!
I want to put this three queries in only one... Take a look that the
only thing that changes is the message_type_id. Any suggestions??
SELECT TO_CHAR( statistics_date, 'DD/MM/YYYY') AS date_in,
sum(total_num_messages)
FROM statistics_daily
WHERE message_type_id IN (4,5)
AND statistics_date = CURRENT_DATE
AND telecom_operator_id <> 0
AND telephone_number IN ( $numbers )
GROUP BY date_in
SELECT TO_CHAR( statistics_date, 'DD/MM/YYYY') AS date_in,
sum(total_num_messages)
FROM statistics_daily
WHERE message_type_id IN (6)
AND statistics_date = CURRENT_DATE
AND telecom_operator_id <> 0
AND telephone_number IN ( $numbers )
GROUP BY date_in
SELECT TO_CHAR( statistics_date, 'DD/MM/YYYY') AS date_in,
sum(total_num_messages)
FROM statistics_daily
WHERE message_type_id IN (21)
AND statistics_date = CURRENT_DATE
AND telecom_operator_id <> 0
AND telephone_number IN ( $numbers )
GROUP BY date_in
Thank you in advance!
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Get different sums from the same table in one query
@ 2007-10-08 10:54 A. Kretschmer <andreas.kretschmer@schollglas.com>
parent: Dani Castaños <danitao.mailists@gmail.com>
1 sibling, 1 reply; 5+ messages in thread
From: A. Kretschmer @ 2007-10-08 10:54 UTC (permalink / raw)
To: pgsql-sql
am Mon, dem 08.10.2007, um 12:49:04 +0200 mailte Dani Castaños folgendes:
> Hi all!
>
> I want to put this three queries in only one... Take a look that the
> only thing that changes is the message_type_id. Any suggestions??
Yes, no problem, You can use UNION (ALL) for such.
Andreas
--
Andreas Kretschmer
Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Get different sums from the same table in one query
@ 2007-10-08 11:32 Peter Childs <peterachilds@gmail.com>
parent: A. Kretschmer <andreas.kretschmer@schollglas.com>
0 siblings, 1 reply; 5+ messages in thread
From: Peter Childs @ 2007-10-08 11:32 UTC (permalink / raw)
To: ; +Cc: pgsql-sql
On 08/10/2007, A. Kretschmer <andreas.kretschmer@schollglas.com> wrote:
>
> am Mon, dem 08.10.2007, um 12:49:04 +0200 mailte Dani Castaños folgendes:
> > Hi all!
> >
> > I want to put this three queries in only one... Take a look that the
> > only thing that changes is the message_type_id. Any suggestions??
>
> Yes, no problem, You can use UNION (ALL) for such.
Not sure thats what he wants at all. Anyway Union all is going to produce a
very slow way of doing this needing to go back to the data 3 times where as
this only goes once.
SELECT TO_CHAR( statistics_date, 'DD/MM/YYYY') AS date_in,
sum(case when message_type_id in (4,5) then total_num_messages else 0 end)
as fourorfive,
sum(case when message_type_id in (6) then total_num_messages else 0 end) as
six,
sum(case when message_type_id in (21) then total_num_messages else 0 end) as
twentyone
FROM statistics_daily
WHERE statistics_date = CURRENT_DATE
AND telecom_operator_id <> 0
AND telephone_number IN ( $numbers )
GROUP BY date_in
You may have to play to get exactly what you want but here worse case your
only doing one scan of the table not three... You may want to use views to
simplify things.
Peter Childs
Andreas
> --
> Andreas Kretschmer
> Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
> GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
>
> ---------------------------(end of broadcast)---------------------------
> TIP 7: You can help support the PostgreSQL project by donating at
>
> http://www.postgresql.org/about/donate
>
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Get different sums from the same table in one query
@ 2007-10-08 11:37 Richard Huxton <dev@archonet.com>
parent: Dani Castaños <danitao.mailists@gmail.com>
1 sibling, 0 replies; 5+ messages in thread
From: Richard Huxton @ 2007-10-08 11:37 UTC (permalink / raw)
To: Dani Castaños <danitao.mailists@gmail.com>; +Cc: pgsql-sql
Dani Castaños wrote:
> Hi all!
>
> I want to put this three queries in only one... Take a look that the
> only thing that changes is the message_type_id. Any suggestions??
>
> SELECT TO_CHAR( statistics_date, 'DD/MM/YYYY') AS date_in,
> sum(total_num_messages)
> FROM statistics_daily
> WHERE message_type_id IN (4,5)
> AND statistics_date = CURRENT_DATE
> AND telecom_operator_id <> 0
> AND telephone_number IN ( $numbers )
> GROUP BY date_in
Is this what you mean?
SELECT message_type_id, to_char...
...
WHERE message_type_id IN (4,5,6,21)
...
GROUP BY message_type_id, date_id
--
Richard Huxton
Archonet Ltd
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Get different sums from the same table in one query
@ 2007-10-08 11:59 A. Kretschmer <andreas.kretschmer@schollglas.com>
parent: Peter Childs <peterachilds@gmail.com>
0 siblings, 0 replies; 5+ messages in thread
From: A. Kretschmer @ 2007-10-08 11:59 UTC (permalink / raw)
To: pgsql-sql
am Mon, dem 08.10.2007, um 12:32:55 +0100 mailte Peter Childs folgendes:
>
>
> On 08/10/2007, A. Kretschmer <andreas.kretschmer@schollglas.com> wrote:
>
> am Mon, dem 08.10.2007, um 12:49:04 +0200 mailte Dani Castaños folgendes:
> > Hi all!
> >
> > I want to put this three queries in only one... Take a look that the
> > only thing that changes is the message_type_id. Any suggestions??
>
> Yes, no problem, You can use UNION (ALL) for such.
>
>
>
> Not sure thats what he wants at all. Anyway Union all is going to produce a
> very slow way of doing this needing to go back to the data 3 times where as
> this only goes once.
Right, conditional statements are a proper solution for this.
Andreas
--
Andreas Kretschmer
Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
^ permalink raw reply [nested|flat] 5+ messages in thread
end of thread, other threads:[~2007-10-08 11:59 UTC | newest]
Thread overview: 5+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2007-10-08 10:49 Get different sums from the same table in one query Dani Castaños <danitao.mailists@gmail.com>
2007-10-08 10:54 ` A. Kretschmer <andreas.kretschmer@schollglas.com>
2007-10-08 11:32 ` Peter Childs <peterachilds@gmail.com>
2007-10-08 11:59 ` A. Kretschmer <andreas.kretschmer@schollglas.com>
2007-10-08 11:37 ` Richard Huxton <dev@archonet.com>
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox