Re: WIP: default values for function parameters

Dimitri Fontaine wrote:
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> Hi,
>
> Le 13 dc. 08 11:39, Peter Eisentraut a crit :
> > On Friday 12 December 2008 20:05:57 Tom Lane wrote:
> >> Excellent. I checked that psql's colon-variable feature behaves the
> >> same. So it looks like the proposed "name: value" syntax would
> >> indeed
> >> not break any existing features. Barring better ideas I think we
> >> should
> >> go with that one.
> >
> > I personally thought that AS was a better idea.
>
> It seems some people want to be able to overload some default
> parameters (but not others) and at the same time alias them to some
> new label. I'm not sure I understand it all, but it seems an example
> of it would be like:
> SELECT xml_function(a, b: 'foo' AS bar);
>
> If this is what some people want when all the spare parts are bound
> together, we don't have the option to use AS for both the meanings.

I agree "AS" is better. And why would the "AS" above be inside the
parentheses; I assume it would be:

SELECT xml_function(a, b: 'foo') AS bar;

Giving labels to parameters passed into functions makes no sense.

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Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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