On Mon, Mar 16, 2009 at 11:36 AM, Scott Marlowe <scott.marlowe@xxxxxxxxx> wrote:
On Sun, Mar 15, 2009 at 9:00 PM, leopay <leopay@xxxxxxxxx> wrote:none that I know of. Any more specific scenarios you're wondering about?
> I wanna if there is any defact when use null column in pg,
> e.g. performance issue
when do the query, the column contain none value could use the index?
