Five Easy to Miss PostgreSQL Query Performance Bottlenecks

Five Easy to Miss PostgreSQL Query Performance Bottlenecks Updated Mar 16, 2023 10 minute read PostgreSQL query planner is full of surprises, so a common-sense approach to writing performant queries is sometimes misleading. In this blog post, I’ll describe examples of optimizing seemingly obvious queries with the help of EXPLAIN ANALYZE and Postgres metadata analysis. All the test queries were per

[tmatsuu]

“EXPLAIN (ANALYZE, BUFFERS)”　BUFFERSの存在いつも忘れる。4は本当に効果あるのだろうか。ちょっとあとで検証したい。