SQL UDF...why do i need to qualify the UDF and the table being used?

I'm new to UDF's. I've found examples on creating and using external UDF's but this example uses just SQL.

My function is defined as:

CREATE FUNCTION library.MaxSEQupv
(parm1 char(10),
parm2 dec(8,0))
RETURNS dec(3,0)
LANGUAGE SQL
BEGIN
RETURN(select
cast(max(field3) as decimal(3,0))
from library.table
where field1 =
parm1 and field2 <= parm2);
END

In order to get it to work, I needed to qualify the table. I would prefer to make this schema independent.

I tested using:

select library.MAXSEQUPV(cast('3434343434' as char(10)),
cast(20120301 as decimal(8,0)))
from sysibm.sysdummy1

again...in order to get it to work, I had to change over to *SQL rather than *SYS for naming conventions and had to qualify the UDF. Again, I would prefer to make the UDF schema independent.

What have I done wrong?

Steve Needles
Northland Insurance - A Travelers Company
385 Washington Street, SB03N
St. Paul, MN 55102
Tel: 651-310-4203
sneedles@xxxxxxxxxxxxx<mailto:sneedles@xxxxxxxxxxxxx>

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