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

[Paul Ramsey]

I think we all buy that. File it.

P

On Mon, Sep 29, 2008 at 4:48 PM, Charlie Savage <cfis at savagexi.com> wrote:
>> So - do we have agreement that NULL's should be ignored in functions that
> act on aggregates?
>
> 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