Re: Issues for named/mixed function notation patch

2009/10/7 Jeff Davis <pgsql(at)j-davis(dot)com>:
> On Wed, 2009-10-07 at 23:32 +0200, Pavel Stehule wrote:
>> It's same as my origin ideas, much better formulated. It is ok for me.
>
> You indicated that there may be some implementation difficulty if the
> VARIADIC keyword is required for calling using named notation:
>
> http://archives.postgresql.org/pgsql-hackers/2009-09/msg01792.php
>
> Do you think it would be reasonable to implement?

I thing, so this is possible. But it needs some instructions more. I
would not add some "unnecessary" checks. It needs one cycle over
parameters more (and one array).

* check if last variadic parameter isn't default
* check if last variadic parameter has flag VARIADIC
* check if there are not any other parameter with VARIADIC flag
* some correction in gram.y (procedural code), that allows VARIADIC in
any position when named notation is active.

Pavel

>
> Regards,
>        Jeff Davis
>
>