Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
>> Also, without OID's, how do you fix EXACT duplicate records that happen
>> by accident?
> How about tid's? SELECT tid FROM tab1.
"SELECT ctid", actually, but that is still the fallback. (Actually
it always was --- OIDs aren't necessarily unique either, Larry.)
regards, tom lane