Re: temporary table / recursion

>Not like that, use the execute command inside your function.
>Here is the description and example.
>http://www.postgresql.org/docs/8.0/static/plpgsql-statements.html
>

that was what I tried before the PREPARE EXECUTE example and it did not
work.
so i will try it again

*** snippet ***

CREATE FUNCTION recurs.scan(p_start INTEGER) RETURNS SETOF recurs.tree AS $$
DECLARE tmp RECORD;
BEGIN

EXECUTE 'CREATE TEMP TABLE recurs_temp (id INT, parent_id INT, label
TEXT)';

INSERT INTO recurs_temp SELECT * FROM recurs.tree WHERE id = p_start; --
first node
EXECUTE recurs.walk(p_start); -- create tree
FOR tmp IN SELECT * FROM recurs_temp LOOP RETURN NEXT tmp; END LOOP;

EXECUTE 'DROP TABLE recurs_temp';

RETURN;

END; $$
LANGUAGE plpgsql;

****

and the output ...

****

recurs=# SELECT * FROM recurs.scan(1);
id | parent_id | label
----+-----------+-----------
1 | | 1
4 | 2 | 1.1.1
5 | 2 | 1.1.2
6 | 2 | 1.1.3
7 | 2 | 1.1.4
8 | 2 | 1.1.5
11 | 10 | 1.1.6.2
13 | 12 | 1.1.6.3.1
12 | 10 | 1.1.6.3
10 | 9 | 1.1.6.1
9 | 2 | 1.1.6
2 | 1 | 1.1
14 | 3 | 1.2.1
15 | 3 | 1.2.2
16 | 3 | 1.2.3
3 | 1 | 1.2
(16 rows)

recurs=# \dt
No relations found.
recurs=# SELECT * FROM recurs.scan(1);
ERROR: relation with OID 2084590 does not exist
KONTEXT: SQL statement "INSERT INTO recurs_temp SELECT * FROM recurs.tree
WHERE id = $1 "
PL/pgSQL function "scan" line 6 at SQL statement
recurs=# \dt
No relations found.

****

so i dont know what went wrong now ...

i am using Postgres 8.0.3 on Windows XP

nevertheless thanx for your help

>
>--Imad
>www.EnterpriseDB.com
>
>---------------------------(end of broadcast)---------------------------
>TIP 6: explain analyze is your friend

_________________________________________________________________
Die MSN Homepage liefert Ihnen alle Infos zu Ihren Lieblingsthemen.
http://at.msn.com/