Re: Receive a record not a tuple - plpgsql

On Wed, Nov 16, 2005 at 06:41:36PM -0200, Flvio Brito wrote:
> How can I call a function into a function? My problem is: I'm trying to
> calculate a tax(inss) over a employee salary. I created a function
> called inss that do it correctly, but when I create another one to show
> more attributes (inss is not a attribute, it is calculate over a salary)
> I receive a record (like {1,Mary,32.45} not a tuple. How can I solve it?

You can put a function in the FROM clause and use a column definition
list:

test=> SELECT test();
test
----------------
(1,Mary,32.45)
(1 row)

test=> SELECT * FROM test() AS (id integer, name text, salary numeric);
id | name | salary
----+------+--------
1 | Mary | 32.45
(1 row)

Another possibility is to create a type and have the function return
that type instead of record:

CREATE TYPE person_info AS (
id integer,
name text,
salary numeric
);

CREATE FUNCTION test() RETURNS person_info AS ...

test=> SELECT * FROM test();
id | name | salary
----+------+--------
1 | Mary | 32.45
(1 row)

test=> SELECT (test()).*;
id | name | salary
----+------+--------
1 | Mary | 32.45
(1 row)

Is one of these examples what you're looking for?

--
Michael Fuhr