"Heikki Linnakangas" <[EMAIL PROTECTED]> writes: > For example: > > 9 > 4 9 > 2 4 0 9
It occurs to me now that this it actually wouldn't be so easy to ripple up changes due to the amount amount of space *decreasing*. Consider if you reduce the leaf 9 to an 8. You want to decrease its parent to 8 but first you have to check that its sibling isn't also 9. Again when you get to the grandparnt you have to check that the "4" isn't a 9. As long as you're on one page that's cheap but if it means paging in another page of the FSM that could be annoying. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com Ask me about EnterpriseDB's PostGIS support! -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
