Re: [Plproxy-users] A complex plproxy query - Mailing list pgsql-general

From Igor Katson
Subject Re: [Plproxy-users] A complex plproxy query
Date
Msg-id 49787FCE.3040509@gmail.com
Whole thread Raw
In response to Re: [Plproxy-users] A complex plproxy query  (Hannu Krosing <hannu@2ndQuadrant.com>)
List pgsql-general
Hannu Krosing wrote:
> On Thu, 2009-01-22 at 15:10 +0300, Igor Katson wrote:
>
>
>> Ok, thank you, guys. What is the best way to make an array out of a
>> column? I didn't make up anything better then writing a function:
>>
>> CREATE OR REPLACE FUNCTION int_column_to_array(query text) RETURNS int[]
>> AS $$
>>     DECLARE
>>         arr int[];
>>         rec int;
>>     BEGIN
>>         FOR rec IN EXECUTE query
>>         LOOP
>>             arr := array_append('{}',rec);
>>         END LOOP;
>>         RETURN arr;
>>     END;
>> $$ language plpgsql;
>>
>
> hannu=# select ARRAY(select usename from pg_user);
>            ?column?
> -------------------------------
>  {postgres,hannu,m1,skyncuser}
> (1 row)
>
>
>
>
Lots of thanks! I tried the same one, but with ARRAY[], so i didn't get
anything.

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