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Re: Function returns error (view)

From: "Bart Degryse" <Bart(dot)Degryse(at)indicator(dot)be>
To: Professor Flávio Brito <prof(dot)flaviobrito(at)gmail(dot)com>
Cc: <pgsql-sql(at)postgresql(dot)org>
Subject: Re: Function returns error (view)
Date: 2008-02-28 07:45:51
Message-ID: 47C674BE.A3DD.0030.0@indicator.be (view raw or flat)
Thread:
Lists: pgsql-sql
Please send the complete DDL for your function and the tables it uses.
Also inform us of the database version you're using.

>>> "Professor Flávio Brito" <prof(dot)flaviobrito(at)gmail(dot)com> 2008-02-27
21:42 >>>

Hi

After I did it I received it 

SELECT * FROM search_password('Paul');


 

ERROR: set-valued function called in context that cannot accept a set
SQL state: 0A000
Context: PL/pgSQL function "search_password(" line 14 at return next

Error at WHERE login= Paul ??

Thanks for your help

Flávio

2008/2/27, Bart Degryse <Bart(dot)Degryse(at)indicator(dot)be>:

How do you call your function? You should call it like this:
SELECT * FROM seach_password('Flavio');
 
Replace Flavio with the login of someone in table_user.
Also watch out for the function name: if you copied my suggestion it is
seach_... and not search_...
 
I would also suggest you replace the
...t.cod_user IN (subselect)
by a join construction. I think it's more performant.


>>> "Professor Flávio Brito" <prof(dot)flaviobrito(at)gmail(dot)com> 2008-02-26
19:20 >>>

Hi

After I did it I received it 

ERROR: set-valued function called in context that cannot accept a set
SQL state: 0A000
Context: PL/pgSQL function "seach_password(" line 14 at return next

Error at WHERE login= USER_FOO ??

Thanks for your help

Flávio

2008/2/26, Bart Degryse <Bart(dot)Degryse(at)indicator(dot)be>: 

I think you have a quoting problem

You want something like
  WHERE login= 'Flavo'
But you're making something like
  WHERE login = Flavo
 
Something like this should work...
CREATE OR REPLACE FUNCTION seach_password(USER_FOO IN
table_user.login%TYPE)
RETURNS SETOF vw_change_password AS 
$BODY$
DECLARE 
r vw_change_password%ROWTYPE;
USER_FOO alias for $1;
BEGIN

  FOR r IN (
    SELECT u.cod_user, u.user_name, u.openpsw, t.user_password, t.end,
t.validate, t.date_add, t.user_time, u.ok
    FROM usuario u, change_user_password t
    WHERE u.cod_user = t.cod_user  AND t.cod_user IN (SELECT cod_user
FROM table_user WHERE login= USER_FOO))

  LOOP
    RETURN NEXT r;
  END LOOP;
  IF NOT FOUND THEN
    RAISE EXCEPTION 'USER not found (%)', USER_FOO;
  END IF;
  RETURN;
END
$BODY$
LANGUAGE 'plpgsql' VOLATILE;


>>> "Professor Flávio Brito" <prof(dot)flaviobrito(at)gmail(dot)com> 2008-02-26
17:32 >>> 

Hi

Don't know why I can't receive a return like my view fields (I'm newbie
in plpgsql). Postgresql returns me a erro . How can I received a answer
like my view structure?

When I Test my view I receive 

SELECT  seach_password('user_login_foo')

My view returns me

25746;"MARCELO
";"bio1";"bio1";"2008-02-19";"FALSE";"2008-02-12";"2008-02-12
12:51:40.229282";"TRUE"
30356;"JOSE DE JESUS
";"977";"377";"2008-02-19";"FALSE";"2008-02-12";"2008-02-12
12:52:19.688381";"TRUE"

It's OK

but when I use function it returns me

ERROR: column "user_login_foo" does not exist
SQL state: 42703
Context: PL/pgSQL function "search_password" line 14 at for over
execute statement

Where is my fault?

Thanks

Flávio 

*************************************************************************************************************
vw_change_password  attributes

cod_user integer,
user_name varchar(150),
openpsw varchar (32),
user_password varchar (50),
end timestamp,
validate boolean,
date_add timestamp,
user_time timestamp,
ok boolean


CREATE OR REPLACE FUNCTION seach_password(USER_FOO varchar(100))
RETURNS SETOF vw_change_password AS 
$BODY$
DECLARE 
r vw_change_password%ROWTYPE;
USER_FOO alias for $1;
sql TEXT;
BEGIN
sql= 'SELECT u.cod_user, u.user_name, u.openpsw, t.user_password,
t.end, t.validate, t.date_add, t.user_time, u.ok
   FROM usuario u, change_user_password t
  WHERE u.cod_user = t.cod_user  AND t.cod_user 
    IN 
    (SELECT cod_user 
        FROM table_user 
            WHERE login='||USER_FOO||')';

FOR r IN EXECUTE sql
 LOOP
 RETURN NEXT r;
END LOOP;
 IF NOT FOUND THEN
        RAISE EXCEPTION 'USER not found', USER_FOO;
 END IF;
 RETURN;
 END
 $BODY$
  LANGUAGE 'plpgsql' VOLATILE;








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Subject: Re: Function returns error (view) (RESOLVED)
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