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Home/Cloud & DevOps/PostgreSQL Aggregate and Window Function Tuning
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PostgreSQL Aggregate and Window Function Tuning

GROUP BY and window functions look declarative โ€” the query says what it wants, and PostgreSQL figures out how to compute it. In practice the planner has strong opinions about how: whether to hash or sort, whether to parallelise, whether to spill memory to disk, whether a matching index changes the p

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Philip McClarence

๐Ÿ“… Apr 30, 2026ยทโฑ 14 min readยทDev.to โ†—
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