On Sun, 2008-01-27 at 22:11 -0800, Neil Conway wrote:
> p. 564 discusses the required behavior. The result of array_agg() is an
> array with one element per input value, sorted according to the optional
> ORDER BY clause. NULL input values are included in the array, and the
> result for an empty group is NULL, not an empty array. Note that per
> page 66, I'd expect array values in the input to array_agg() not to be
> flattened.
Should there be an inverse operator (a SRF, in this case) that returns a
set from an array?
Regards,Jeff Davis