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MTAR T3D Sessions: Why PostgreSQL Chooses the Plans It Does
The PostgreSQL planner doesn't make random decisions. Every execution plan is shaped by statistics, cost estimates, and the information available at the time. Understanding those decisions can completely change the way you approach database performance.
In this Postgres Love Letters episode, JD and Hunter O'Brien explore how learning to read query plans transformed the way Hunter works with PostgreSQL. What once seemed like a black box became a system with clear reasoning, making it easier to diagnose slow queries, understand performance bottlenecks, and make informed tuning decisions.
The…
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