>>> On Thu, Oct 18, 2007 at 1:01 AM, in message
<1192687310.749557.227290@q5g2000prf.googlegroups.com>, yogesh
<yogesh.arora.daffodil@gmail.com> wrote:
> What is the Command to drop the Not Null Constraint from a Column
http://www.postgresql.org/docs/8.2/interactive/sql-altertable.html