After reviewing http://www.postgresql.org/docs/8.3/static/sql-cluster.html a couple of times, I have some questions: 1) it says to run analyze after doing a cluster. i'm assuming autovacuum will take care of this? or should i go ahead and do the analyze 'now' instead of waiting? 2) is there any internal data in the db that would allow me to programmatically determine which tables would benefit from being clustered? 3) for that matter, is there info to allow me to determine which index it should be clustered on in cases where the table has more than one index? 4) for tables with >1 indexes, does clustering on one index negatively impact queries that use the other indexes? 5) is it better to cluster on a compound index (index on lastnamefirstname) or on the underlying index (index on lastname)? tia -- Douglas J Hunley (doug at hunley.homeip.net) - Linux User #174778 http://doug.hunley.homeip.net Everything takes twice as long as you plan for and produces results about half as good as you hoped. ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
