AW: external UDF problem

Thanx for all the answers. Solved my problem.

-----Ursprüngliche Nachricht-----
Von: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] Im Auftrag von Elvis Budimlic
Gesendet: Donnerstag, 10. Januar 2008 08:23
An: 'Midrange Systems Technical Discussion'
Betreff: RE: external UDF problem

When you pass literals such as 'test' system is implicitly converting the
input argument to VARCHAR and fails to locate a fitting function as your UDF
expects CHAR.
Easiest fix is to change your UDF to accept VARCHARs instead.
Due to data promotion rules for character strings, this UDF will then handle
CHAR input as well (best of both worlds).

Elvis

Celebrating 10-Years of SQL Performance Excellence on IBM i5/OS and OS/400
www.centerfieldtechnology.com


-----Original Message-----
Subject: external UDF problem

Hi everybody,

i'm trying to get my hands wet and dirty with UDFs. i need to access a
subprocedure of a service program. the service program is created. the
udf is created/registered. but when i try to use the udf in an sql
statement it says that it can't find the function

SQL0204 SUBSTRINGMERGE der Art *N in *LIBL nicht gefunden.
(SUBSTRINGMERGE of type *N in *LIBL not found.)

i can access the subprocedure from another rpg program. no problem
there.

subprocedure prototype:
D import_substringMerge...
D PR 1000A
D dest 1000A
D source 1000A


sql for creating the function:
create function substringMerge (dest char(1000), src char(1000))
returns char(1000)
language RPGLE
specific import_substringMerge
deterministic
no sql
returns null on null input
no external action
not fenced
external name 'OBJEKTTEST/IMPUTIL_SV(import_substringMerge)'
parameter style general;


my sql for testing:
select substringMerge('test', ' x ') from sysibm/sysdummy1

and is there any way to specifiy *libl in the external name for the
service program?

thanx in advance

Mihael Schmidt