Gregory Stark <gsstark@mit.edu> writes:
> Tom Lane <tgl@sss.pgh.pa.us> writes:
>> Actually, the more I think about it the more I think that 3 numbers
>> might be the answer. 99% of the code would use only the permanent ID.
> Don't we already have such a permanent number -- just one we don't use
> anywhere in the data model? Namely the oid of the pg_attribute entry.
Nope, because pg_attribute hasn't got OIDs.
regards, tom lane