In response to wstrzalka :
> What I need is to join 2 tables
>
> CREATE TABLE master(
> id INT4
> );
>
>
> CREATE TABLE slave (
> master_id INT4,
> rank INT4,
> value TEXT);
>
>
> What I need is to make the query:
>
> SELECT m.id, array_agg(s.value) AS my_problematic_array
> FROM master AS m LEFT JOIN slave AS s ON (m.id = s.master_id)
> GROUP BY m.id;
Faster solution (compared to my other email):
test=# select id, array_agg(value) from (SELECT m.id, s.value FROM
master AS m LEFT JOIN slave AS s ON (m.id = s.master_id) order by 1,2)
foo group by 1;
id | array_agg
----+-----------
1 | {3,5,7}
2 | {NULL}
(2 rows)
Andreas
--
Andreas Kretschmer
Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)