[postgis-users] GeometryCollection(Empty) is SRID dependent (orsupporting nulls in st_union)

[Mark Cave-Ayland]

Charlie Savage wrote:

> To recap:
> 
> * NULL values cause functions such as ST_UNION to return NULL
> * This is counter to postgresql's built in aggregates, such as 
> avg/max/min, which ignore the NULL values
> 
> 
> I think PostGis should change to match the postgresql semantics.

Yes, that sounds entirely sensible.


ATB,

Mark.

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Mark Cave-Ayland
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