the row estimate became ~1000x smaller with the stat in place, so it looks like it grossly miscalculates the query plans without the stats for large tables representing M:M relations. On Wed, Feb 2, 2022 at 11:47 AM Michael Lewis <mlewis@xxxxxxxxxxx> wrote: > > What does the row estimate look like on the scan of data table with that statistic in place? Anytime the stats give a mis-estimate this far off, I wouldn't expect that plans would be optimal except by luck. > > Index Scan using data_pkey on data t (cost=0.57..21427806.53 rows=58785023 width=131) (actual time=0.024..0.482 rows=854 loops=1) > Index Cond: (id > 205284974)
