>>Is it worth mentioning this as a compatibility issue?
>>"Prior to PostgreSQL 7.3, serial implied UNIQUE. This is no longer
>>automatic. If you wish a serial column to be in a unique constraint or a
>>primary key, it must now be specified, same as with any other data type."
>
>
> Er, that *was* a compatibility issue. For 7.3.
Doh - I'm an idiot.