On Mon, Jun 7, 2010 at 3:52 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> Is there a way to make values of "undefined" type pass through the SELECT DISTINCT filter (getting checked for uniqueness) but remain "undefined" if all the values supplied for the column are "undefined"?
The concept of "uniqueness" depends on what data type the data is
interpreted as.
--
greg