Обсуждение: Get different sums from the same table in one query
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!
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
On 08/10/2007, A. Kretschmer <andreas.kretschmer@schollglas.com> wrote:
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
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
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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
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