hi,
i have a table called "zones": idzone, zone_name
and several tables called zonename_records (same structure), where
zonename is one of the zone_name in the "zones" table.
What i want to do is a function that union all of this tables
dinamically based on "zones" table, this is what i've done so far:

CREATE OR REPLACE FUNCTION get_all_records()
RETURNS SETOF record AS
$BODY$DECLARE
zones record;
recs record;
BEGIN
for zones in select lower(zone_name) as n from zones loop
for recs in select * from quote_ident(zones.n || '_records') loop
return next recs;
end loop;
end loop;
RETURN;
END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100;

but i get this error!

ERROR: wrong record type supplied in RETURN NEXT
CONTEXT: PL/pgSQL function "get_all_records" line 9 at RETURN NEXT

Andrea

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On 2/10/2010 11:29 AM, Andrea Visinoni wrote:
Pg will not auto build the columns outputted from generic type record.
The function needs to describe what the output is going to look like.

The function can inherit the layout from a table or create the new pg
data type but PG does not know what the data looks like to create the
result set. .


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On 02/10/2010 08:29 AM, Andrea Visinoni wrote:
One thing I would do is rename your zones record variable. pgsql does
not deal well with a variable having the same name as a schema object,
in this case your table zones.

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Adrian Klaver
adrian.klaver (AT) gmail (DOT) com

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