[SQL] conditional aggregates

2010-12-08 Thread Marcin Krawczyk
Hi list, Can anyone advise me on creating an aggregate that would take additional parameter as a condition ? For example, say I have a table like this id;value 1;45 2;13 3;0 4;90 I'd like to do something like this SELECT min_some_cond_aggregate(value,0) FROM table to get the minimal value

Re: [SQL] conditional aggregates

2010-12-08 Thread Pavel Stehule
Hello use a CASE statement http://www.postgresql.org/docs/7.4/static/functions-conditional.html Regards Pavel Stehule 2010/12/8 Marcin Krawczyk jankes...@gmail.com: Hi list, Can anyone advise me on creating an aggregate that would take additional parameter as a condition ? For example, say

Re: [SQL] conditional aggregates

2010-12-08 Thread Marcin Krawczyk
Yeah I know but I'm having problems creating sfunc fuction for the aggregate. regards mk 2010/12/8 Pavel Stehule pavel.steh...@gmail.com Hello use a CASE statement http://www.postgresql.org/docs/7.4/static/functions-conditional.html Regards Pavel Stehule 2010/12/8 Marcin Krawczyk

Re: [SQL] conditional aggregates

2010-12-08 Thread Marc Mamin
: [SQL] conditional aggregates Yeah I know but I'm having problems creating sfunc fuction for the aggregate. regards mk 2010/12/8 Pavel Stehule pavel.steh...@gmail.com Hello use a CASE statement http://www.postgresql.org/docs/7.4/static/functions-conditional.html Regards Pavel Stehule

Re: [SQL] conditional aggregates

2010-12-08 Thread Marcin Krawczyk
:* Mittwoch, 8. Dezember 2010 14:20 *To:* Pavel Stehule *Cc:* pgsql-sql@postgresql.org *Subject:* Re: [SQL] conditional aggregates Yeah I know but I'm having problems creating sfunc fuction for the aggregate. regards mk 2010/12/8 Pavel Stehule pavel.steh...@gmail.com Hello use a CASE