Waiting for PostgreSQL 19 – Display Memoize planner estimates in EXPLAIN
Read OriginalThis technical blog post details a recent commit to PostgreSQL 19 that adds the display of Memoize planner estimates (cache entries, unique keys, lookups, hit ratio) in EXPLAIN. It explains the purpose of the Memoize node for caching repeated scans and includes a demonstration to illustrate how this new information aids in query tuning and understanding planner decisions.
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