Gauthier, Dave <dave.gauth...@intel.com> schrieb:
> Hi:
>
>
>
> I have a PL-Pgsql function that returns a record of a type that have 4
> elements
> (columns). Let’s say the first element/column is called “id_num”. Is there a
> way I can specify the id_num element of the record returned from iside a
> query?
>
>
>
> For example, select col1 from thetable where my_plpgsql_fn(col2).id_num = 123;
Okay, i think, i got it:
test=# create function x(in int, out a int, out b int) returns record as
$$begin a:=1;b:=2;return; end; $$language plpgsql;
CREATE FUNCTION
Time: 0.412 ms
test=*# select 5 where 3=(select b from x(2));
?column?
----------
(0 rows)
Time: 0.335 ms
test=*# select 5 where 2=(select b from x(2));
?column?
----------
5
(1 row)
Andreas
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