At 04:30 AM 1/03/2004 +0000, you wrote:

>hi
>
>i would like to create a udf
>an average function...
>i know that exist but i would like to learn...
>
>i checked on the web to try to create it but that seem imposible to
>have many parameter
>
>how to do it?

You can have multiple *input* parameters but a function returns only one
result.

http://www.mers.com/udfs.html

The udflib samples are in the /samples directory under your Firebird root.

/hb