Hannu Krosing writes:
> On 11/26/2012 09:05 PM, Tom Lane wrote:
>> The analogy to other aggregates is probably a better thing to argue
>> from. On the other hand, I don't know anyone outside the SQL standards
>> committee who thinks it's actually a good idea that SUM() across no rows
>> returns n
On 11/26/2012 09:05 PM, Tom Lane wrote:
Hannu Krosing writes:
In some previous mail Tom Lane claimed that by SQL standard
either an array of all NULLs or a record with all fields NULLs (I
don't remember which) is also considered NULL. If this is true,
then an empty array - which can be said to
