[postgis-devel] Spatial relationships not defined should return null

[Mark Cave-Ayland]

On 10/02/12 04:53, Paul Ramsey wrote:

> I'm not enthusiastic to change this behavior.
> P.
>
> On Thu, Feb 9, 2012 at 2:39 PM, Jose Carlos Martinez Llario
> <jomarlla at cgf.upv.es>  wrote:
>> Hi list,
>> According to the standards the spatial predicates which are not defined as
>> st_touches (point , point) or st_overlaps (line, polygon) must return null.
>> PostGIS returns false in those cases (trunk and previous versions too), so
>> it is against SQL/MM.
>>
>> Should I open a ticket or this is the wanted behavior?
>>
>> Regards,
>> Jose

I agree with Paul, it does sound a little strange. Can you point us 
towards the relevant page in SQL/MM? Also what do SQL Server/Oracle 
Spatial do?


ATB,

Mark.

-- 
Mark Cave-Ayland - Senior Technical Architect
PostgreSQL - PostGIS
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