| Subject | Re: [firebird-support] UDF:s and nulls |
|---|---|
| Author | Ivan Prenosil |
| Post date | 2005-02-11T11:01:43Z |
> I've seen in some documents that UDF:s can't take NULLs as input and* About NULLs as input parameter you can read this document
> can't return NULLs. But then I've seen indications in other places of
> UDF:s doing exactly that.
http://www.volny.cz/iprenosil/interbase/ip_ib_udf_null.htm
* NULL can be returned from UDF, provided the value
is passed by reference, not by value.
Ivan