Hi all. I'm willing to change an BIGINT ID column (actually a SERIAL8) with a BIGINT whose valules are (pseudo)random. The main objective is to avoid guessability. I whish I could also use it as the PK (as it's now) but that's not really important now. Any hint? -- Vincenzo Romano NotOrAnd Information Technologies NON QVIETIS MARIBVS NAVTA PERITVS -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general