Re: user defined function

Yl Zhou <andrew.ylzhou@gmail.com> writes:
> I want to implement a UDF that can accept a parameter which is a tuple of
> any table, and returns the number of NULL attributes in this tuple.
> Different tables may have different schemas. How can I implement this
> function?  Thanks.

You could do that in C, but none of the available PLs support it.

            regards, tom lane