Hi Friends,
Thanks for all your for the reply.
I tried the function and when I execute it using
select * from myfunction()
it says
ERROR: a column definition list is required for functions returning "record"
Could you please help me to fix this error?
Thanks so much for your help.
-maria
On Tue, Jun 3, 2008 at 3:06 AM, Bart Degryse <
Bart.Degryse@indicator.be> wrote:
Hi Maria,
Try something like
CREATE OR REPLACE FUNCTION myfunction() RETURNS SETOF RECORD AS
$body$
DECLARE
rec record;
BEGIN
FOR rec IN (
SELECT * FROM sometable)
LOOP
RETURN NEXT rec;
END LOOP;
RETURN;
END;
$body$
LANGUAGE 'plpgsql' VOLATILE;
As you can see, the number and type of the output fields only depends on whatever table you query in the FOR loop.
It's not magic though. It just postpones defining the number and type of the output fields until querying the function.
You will have to define the output fields when querying your function, like
select * from myfunction() as ("field1" integer, "field2" text, ...)
>>> "maria s" <
psmg01@gmail.com> 2008-06-02 22:40 >>>
Hi friends,
I am very new to plsql.
I have to write a function that quries few tables and returns a resultset of varying column.
In that case I cannot predefine the table with column.
If I use RETURNS SETOF then I should know the number of columns and its type?!
Is there anyway to return a resultset with any number of column?
Thanks for your help.
-maria