Date: Wed, 25 Sep 2013 16:11:17 -0700 (PDT)
From: jonathansfl <jonathanbrinkman@yahoo.com>
To: pgsql-sql@postgresql.org
Message-ID: <1380150677632-5772407.post@n5.nabble.com>
Subject: postgres subfunction return error
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greetings. I'm trying to write a function that acts like a switchboard,
calling other functions depending on incoming parameters.
I'm getting error: query has no destination for result data
Please advise what we're doing wrong. The subfunctions return a series of
refcursors in a single table and single row (see pr_test_subfunction).
When i run the parent function, i want to see the same results as if i had
run the subfunction - the results of the subfunction should pass-thru to the
parent calling function. Can this be done?

Subfunction:
[CODE]
CREATE OR REPLACE FUNCTION dev.pr_test_subfunction (
  v_action varchar,
  out swv_refcur refcursor,
  out swv_refcur2 refcursor,
  out swv_refcur3 refcursor,
  out swv_refcur4 refcursor,
  out swv_refcur5 refcursor
)
RETURNS record AS
$body$
DECLARE
   SWV_Action VARCHAR(50) DEFAULT Coalesce(v_Action,'');
   
BEGIN
    OPEN SWV_RefCur  for SELECT 1;
    OPEN swv_refcur2 for SELECT 2;
    OPEN swv_refcur3 for SELECT 3;
    OPEN swv_refcur4 for SELECT 4;
    OPEN swv_refcur5 for SELECT 5;
    RETURN;
END;
$body$
LANGUAGE 'plpgsql'
VOLATILE
CALLED ON NULL INPUT
SECURITY INVOKER
COST 100;
[/CODE]

Parent Function:
[CODE]
CREATE OR REPLACE FUNCTION dev.pr_test_parentfunction (
  v_action varchar,
  out swv_refcur refcursor,
  out swv_refcur2 refcursor,
  out swv_refcur3 refcursor,
  out swv_refcur4 refcursor,
  out swv_refcur5 refcursor
)
RETURNS record AS
$body$
DECLARE
   SWV_Action VARCHAR(50) DEFAULT Coalesce(v_Action,'1');
   
BEGIN
    
    IF SWV_Action = '1' THEN
    	SELECT * FROM dev.pr_test_subfunction(SWV_Action); 
    ELSIF SWV_Action = '2' THEN
    	SELECT * FROM dev.pr_test_subfunction(SWV_Action); 
    ELSE
        OPEN SWV_RefCur  for SELECT 1;
        OPEN swv_refcur2 for SELECT 2;    	
    END IF;

    RETURN;
END;
$body$
LANGUAGE 'plpgsql'
VOLATILE
CALLED ON NULL INPUT
SECURITY INVOKER
COST 100;
[/CODE]


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