=?iso-8859-1?q?Rolf=20=D8stvik?= <rolfostvik@xxxxxxxx> writes: > If you (Tom) still want me to do the following steps > then please tell me. Please --- I'm still curious why the estimated cost changed so much from 7.4 to 8.2. I can believe a marginal change in cost leading to a plan switch, but comparing the total-cost numbers shows that 8.2 must think that indexscan is a whole lot more expensive than 7.4 did, which seems odd. For the most part 8.2 ought to think nestloop-with-inner-indexscan is cheaper than 7.4 did, because we now account for caching effects across repeated iterations of the inner scan. regards, tom lane
