Hi,
I have seen some udf declarations.

The first udf declared is that
======================
DECLARE EXTERNAL FUNCTION UDF1
INTEGER, INTEGER
RETURNS DOUBLE PRECISION BY VALUE
MODULE NAME 'UDFDLL' ENTRYPOINT "Udf1"

The Second Udf is that
======================
DECLARE EXTERNAL FUNCTION UDF2
INTEGER, INTEGER
RETURNS DOUBLE PRECISION
MODULE NAME 'UDFDLL' ENTRYPOINT "Udf2"


Returns type are different.
What is the difference between By Value and By reference


Regards,

ibrahim Bulut
Software/Database Developer
Turkish Republic


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