You are correct that the _definition_ of SQL functions and procedures
resides in QSYS2/SYSROUTINE.
Run this SQL query:
select * from QSYS2/SYSROUTINE
and take a look at the contents of the column EXTERNAL_NAME. This
identifies the object (*PGM or *SRVPGM) that _implements_ the function
The actual code that implements such a function or procedure must
necessarily reside in a *PGM or *SRVPGM.
DB2/400 is unique among IBM's DB2 implementations in that you do not
necessarily have to define a *PGM to use it as a "stored procedure" --
any *PGM can be CALLed via the SQL CALL interface. But, if you want to
define it as a FUNCTION, or define the parameter style, etc., then you
need to define it via the SQL CREATE PROCEDURE or CREATE FUNCTION statement.
Hope that helps,
Mark S. Waterbury
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