am Wed, dem 05.12.2007, um 10:47:44 +0000 mailte Ashish Karalkar folgendes: > > X Y > > ------------ > > 1 ABC > > 2 PQR > > 3 XYZ > > 4 LMN > > 1 LMN > > 2 XYZ > > > > I want a query that will give me following output > > > > 1 ABC:LMN > > 2 PQR:XYZ > > 3 XYZ > > 4 LMN > > > > Any help will be really helpful > > You need a new aggregate-function. A solution for a similar problem (but > with comma instead :) can you find here: > http://www.zigo.dhs.org/postgresql/#comma_aggregate > > Thanks Andreas for your replay. > But i don't have an option two send argument to the store proc nither do i > know how many multiple records are there for a single X. I want result for > all rows of table. > > I dont thnink that function will give desired output. test=# create table Ashish ( x int, y text); CREATE TABLE test=*# copy ashish from stdin; Enter data to be copied followed by a newline. End with a backslash and a period on a line by itself. >> 1 abc >> 2 pqr >> 3 yxz >> 4 lmn >> 1 lmn >> 2 xyz >> \. test=*# CREATE FUNCTION my_aggregate(text,text) RETURNS text AS ' SELECT CASE WHEN $1 <> '''' THEN $1 || '':'' || $2 ELSE $2 END; ' LANGUAGE sql IMMUTABLE STRICT; CREATE AGGREGATE my_comma (basetype=text, sfunc=my_aggregate , stype=text, initcond='' ); CREATE FUNCTION CREATE AGGREGATE test=*# select x, my_comma(y) from ashish group by x; x | my_comma ---+---------- 4 | lmn 3 | yxz 2 | pqr:xyz 1 | abc:lmn (4 rows) Okay, i forgot to sort and the chars are in lower case... 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 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to majordomo@xxxxxxxxxxxxxx so that your message can get through to the mailing list cleanly
