On 06 Sep 2013, at 17:58, Dominique Devienne <[email protected]> wrote:
>> select Distance( constGeom, geometry ) from table, (select
>> GeomFromText('Point(13.457 3)') as constGeom );
>
> Clever. Thanks for that.
Simple and elegant. Thanks for the idea, I'll give it a try.
> Or make your Distance function implementation do the GeomFromText
> implicitly, with a bit of duck-typing.
The semantics of Distance (or better ST_Distance) are defined in the ISO SQL/MM
part 3 and OGC Simple Feature/SQL specs. I would prefer to avoid non-specified
behaviour.
Pepijn
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