Using Array-Values in subselect

Hi,

i want to create a linked structure of values. Each text has an id, an
array of children ids and the value itself.

CREATE TABLE structure
(
id int8,
children int8[],
value text
);

Now i want to select all values which are connected to a given parent #x
at once. My first idea was this:

SELECT value
FROM structure
WHERE id IN (SELECT children FROM structure WHERE id = #x);

But this causes an error because the array field just returns a string
instead of seperated values. Is there a way to make arrays return sort
of "real arrays" or something usable in a subselect in reasonable speed?

Thank you
Alvar

--
Alvar C.H. Freude | alvar(dot)freude(at)merz-akademie(dot)de

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