Re: duplicate key violates unique constraint

On May 10, 2007, at 9:01 AM, Carol Walter wrote:
> And this is more than a question than an answer, but I thought that
> sequences had to designated as data type "serial."

Nope... sequences are actually completely un-related to tables. You
can define a sequence that's not referenced by any table. The serial
data type is essentially a 'macro' that:

Creates a sequence
Sets the default value for the field to be the nextval() of that
sequence
Sets the field to be NOT NULL
--
Jim Nasby                                            jim@nasby.net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)