Re: Dblink vs calling a function that returns void

On Mon, Mar 29, 2010 at 12:12 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Boszormenyi Zoltan <zb@cybertec.at> writes:
>> I need to call a function via dblink that returns a void, i.e.
>> technically nothing.
>
> You're overthinking the problem.  Imagine void is just a datatype
> (which it is...)  This should work:

but it isn't! void returning functions may not be queried over the
binary protocol (why?), so if you used dblink w/void returning
functions, and dblink later supported binary results, your code would
break (i'm sure such a thing would be optional, but the point stands).

merlin