2009/4/2 Tom Lane <tgl@sss.pgh.pa.us>:
> Pavel Stehule <pavel.stehule@gmail.com> writes:
>> actually, there isn't any difference between a) and b)
>
>> a) select somevariadicwithany(10);
>> b) select somevariadicwithany(variadic 10);
>
>> in this case the keyword VARIADIC is ignored.
>
> Well, in my mind what the VARIADIC keyword does is it prevents the parser
> from building an ARRAY[] expression around the remaining parameters.
> Which would be incorrect for a VARIADIC ANY function because such a
> function presumably doesn't want to force all the actual arguments
> to be the same type --- if it did, it could use VARIADIC ANYARRAY.
>
> VARIADIC ANY basically exists to allow an ANY-argument function to
> accept any number of ANY parameters. As such, PG_NARGS() is all it
> really needs to know, plus the already-existing support for obtaining
> the parameters' actual datatypes.
>
>
it can be good idea - I see only one disadvantage.
I will have two functions with same body - but it isn't significant problem
regards
Pavel Stehule
regards, tom lane
>
