SQL User Defined Functions

Guys,

Im trying to define a user defined function, but I don't want to specify the
library that the external program lives in. According to the SQL reference
this should be possible, by not qualifying the name of the external program
with the library

Eg

CREATE FUNCTION COLINDEV/CVTDAT (DEC (8,0)) RETURNS DEC(8,0)
LANGUAGE RPGLE NO SQL PARAMETER STYLE DB2SQL                  
RETURNS NULL ON NULL INPUT NO EXTERNAL ACTION                 
EXTERNAL NAME 'SQL0020' DETERMINISTIC FINAL CALL

In theory, this should create the function CVTDAT in my dev library, and
should pick up the external program from the library list in effect at the
time an SQL statement is run using this function, rather than having to
hardcode the library name into the function!

But it does not work, I get this error message:
SQL0449 - External program name for routine SQL0020 in BERUSRPGM not valid

Don't know why, the manual says this should be ok!

Cheers
Colin.W
Bertram Books UK               
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