On Wed, Aug 07, 2002 at 03:29:50 +0000,
cnliou(at)eurosport(dot)com wrote:
> Hello!
>
> Corporate table, t1, should contain exact 1 row.
> I strongly believe that there are cleaner versions
> than the following combination of trigger and rule.
>
> Thank you in advance for any improved version!
Another way to keep someone from inserting a second row is to have a primary
key and a constraint fixing the primary key to a fixed value.