Re: WIP: default values for function parameters

2008/12/11 Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>:
>>>> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> In any case, I'm not wedded to using AS for this, and am happy to
>> consider other suggestions. But => isn't acceptable.
>
> How about using a bare equals sign (or the => characters) for
> parameter assignment, but require that the parameter name be prefixed
> with some special character? (My first thought was a dollar sign, but
> that would cause problems in PL/pgSQL, so some other character would
> need to be used.) It seems like that could give the parser enough
> context to consider the operator as parameter assignment, so it
> wouldn't require making it a fully reserved word or preclude other
> uses of the operator.

maybe this combination should be safe

$name => .... or $name -> ...

it's not used everywhere

Pavel

>
> I guess it would preclude the use of whatever character was chosen as
> a prefix operator in the context of a parameter list, however; which
> might be a fatal flaw to the idea.
>
> -Kevin
>