Rob Sargent <robjsargent@xxxxxxxxx> writes: > Should reality be half again as large as the estimated row count? > coon=# select count(*) from sui.segment; > count > ---------- > 49,942,837 -- my commas > (1 row) > coon=# vacuum (analyse, verbose) sui.probandset; Uh, what does sui.probandset have to do with sui.segment ? regards, tom lane