Sandro Dentella <sandro.dentella@tin.it> writes:
> I'm trying to create a function that should return a date, and occasionally
> NULL value. I can't see how to do that. I'm using pl/tcl.
You need the "return_null" command, which is new in 7.1 --- before that
there was no way to do it in pltcl.
"return_null" seems to be missing from the documentation :-(. No wonder
you couldn't find it.
regards, tom lane