> > if that index is causing the problem, you may want to consider setting > > up partial index to exclude null values. > > This is a single column index. I assumed that null column values were > not indexed. Is my assumption incorrect? > > -K It turns out it is, or it certainly seems to be. I didn't know that :). So partial index will probably not help for null exclusion...
would be interesting to see if you are getting swaps (check pg_tmp) when performance breaks down. That is an easy fix, bump work_mem. Merlin ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
