Re: Impossible with pl/pgsql?

Hi,
 I have tried it on PostgreSQL 8.0.3 and following query gives the result 
 SELECT ( DECORATE( FIND )).*  FROM FIND()

Regards,
R.Muralidharan  
   

-----Original Message-----
From: pgsql-sql-owner@postgresql.org
[mailto:pgsql-sql-owner@postgresql.org]On Behalf Of
twanger@bluetwanger.de
Sent: Monday, May 30, 2005 8:46 PM
To: 'pgsql-sql@postgresql.org'
Subject: [SQL] Impossible with pl/pgsql?


Hi,

I have a function find() that returns a SETOF INT. I further have a
function decorate as follows:

CREATE TYPE decorate_type AS (id INT, name TEXT, author TEXT,
last_change TIMESTAMP);
CREATE FUNCTION decorate(INT)RETURNS decorate_typeSTABLELANGUAGE 'plpgsql'AS '
-- BLACK BOX
';

Now I can do

SELECT decorate(4);
(4,egg,john,2003-05-05)

and I can do

SELECT * FROM decorate(4);
id | name | author | last_change
--------------------------------4 | egg  | john   | 2003-05-05

SELECT * FROM decorate(5);
id | name | author | last_change
--------------------------------5 | ham  | dave   | 2004-03-01

Let's say find() gives me 4 and 5:

SELECT * FROM find();
find
---- 4 5

Now how would a query look like that involves find() and decorate() and
returns

id | name | author | last_change
--------------------------------4 | egg  | john   | 2003-05-055 | ham  | dave   | 2004-03-01

I can't figure this out for the life of me.

I also have the impression that that's impossible to do without changing
find() or decorate().

Markus

-- 
Markus Bertheau ☭ <twanger@bluetwanger.de>


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