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/
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
| 
