aggregate arrays

example:

a query returns a column that contains arrays:

select * FROM (VALUES (ARRAY[1,2,3,3,4], 1), (ARRAY[1,2,2,3,4], 2)) t;
column1 | column2
-------------+---------
{1,2,3,3,4} | 1
{1,2,2,3,4} | 2
(2 rows)

and then we want aggregate that result.

example by column2:

WITH "test" AS (
select * FROM (VALUES (ARRAY[1,2,3,3,4], 1), (ARRAY[1,2,2,3,4], 2)) t
)

SELECT array_agg(column2) column2 FROM "test";
column2
---------
{1,2}
(1 row)

and I want aggregate column1 arrays into one array. I want receive the
result:

column1 | column2
----------------------+-------------
{1,2,3,3,4,1,2,2,3,4} | {1,2}

I've tried the statement:

WITH "test" AS (
select * FROM (VALUES (ARRAY[1,2,3,3,4], 1), (ARRAY[1,2,2,3,4], 2)) t
)

SELECT
array_agg(unnest(column1)) AS column1,
array_agg(column2) column2
FROM
"test";

But I receive the error:

ERROR: set-valued function called in context that cannot accept a set

How can I aggregate arrays into one array?
--

. ''`. Dmitry E. Oboukhov
: :’ : email: unera(at)debian(dot)org jabber://UNera(at)uvw(dot)ru
`. `~’ GPGKey: 1024D / F8E26537 2006-11-21
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