On Aug 27, 2012, at 8:56 PM, Tom Lane wrote: > This formula is not actually correct, as you'd soon find out if you > experimented with values with the high-order bit of the low-order word > set. (Hint: sign extension.) > > The correct formula is both simpler and far more efficient: > > (classid::int8 << 32) | objid::int8 > > This works because oidtoi8 correctly treats the OID value as unsigned.
Oh, nice, thanks! David -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
