Jeremy Altavilla <jeremyaltavi...@gmail.com> writes: > We have several select statements whose performance is greatly improved by > deleting some stats from pg_statistic.
You might have better results by setting up some "extended stats" for the combination of bag_type columns that this query depends on. Per your description, there's a fair amount of cross-column correlation, which the planner will not expect without some extended stats to tell it so. https://www.postgresql.org/docs/10/planner-stats.html#PLANNER-STATS-EXTENDED regards, tom lane
