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Any posts on this? Are there bulk data loads that make table stats more stale and affect plans? I’m wondering what would suddenly make a plan selection change a
by jhas78asd 3y ago
Any posts on this? Are there bulk data loads that make table stats more stale and affect plans? I’m wondering what would suddenly make a plan selection change a lot that might be a contributing factor.
- natmaka 3y ago> bulk data loads that make table stats more stale This is the usual culprit (cure: "ANALYZE ((tablename))"). Collecting more samples (ALTER TABLE SET STATISTICS...) may be useful. "Extended Statistics" covers most(?) other cases: https://www.postgresql.org/docs/current/planner-stats.html#PLANNER-STATS-EXTENDED https://www.postgresql.org/docs/current/planner-stats.html#P... https://www.postgresql.org/docs/current/multivariate-statistics-examples.html https://www.postgresql.org/docs/current/multivariate-statist...