On Sun, Mar 15, 2009 at 9:39 PM, leopay <leopay@xxxxxxxxx> wrote: > > > 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: >> > I wanna if there is any defact when use null column in pg, >> > e.g. performance issue >> >> none that I know of. Any more specific scenarios you're wondering about? > > when do the query, the column contain none value could use the index? Older versions, no, modern versions yes. When that changed, I don't know, as I'm running only 8.3 anymore. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
