Tom Lane wrote:
> Yl Zhou <andrew(dot)ylzhou(at)gmail(dot)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.
How would you define the signature for the function? One parameter of
type anyelement?
--
Richard Huxton
Archonet Ltd