On Tue, 2006-03-07 at 11:15, Alvaro Herrera wrote: > Scott Marlowe wrote: > > > Lastly, I noticed that after you clusters on all your indexes, the query > > planner switched from a merge join to a hash join, and it was slower. > > You might wanna try turning off hash joins for a quick test to see if > > merge joins are any faster. > > Anyway please note that clustering "all indexes" does not really make > sense. You can cluster only on one index. If you cluster on another, > then the first clustering will be lost. Better make sure to cluster on > the one index where it makes the most difference. Note that I was referring to his clustering on an index for each table. I.e. not on every single index. but he clustered on four tables / indexes at once, so that was what I was referring to. Sorry for any confusion there. So, do you see any obvious, low hanging fruit here?
