Kevin, > md5sum of each tuple? As an optional system column (a la oid)?
I am mainly an application programmer working with PostgreSQL. And I want to point out an additional usefullness of an md5sum of each tuple: it makes comparing table-contents in replicated / related databases MUCH more feasible. I am in the process of adding a user-space "myhash" column to all my applications tables, filled by a trigger on insert / update. It really speeds up table comparison across databases; and it is very helpfull in debugging replications. Harald -- GHUM Harald Massa persuadere et programmare Harald Armin Massa Spielberger Straße 49 70435 Stuttgart 0173/9409607 no fx, no carrier pigeon - %s is too gigantic of an industry to bend to the whims of reality -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers