The 81% Query Plan Jump: How Training Small Models is Rewriting the Rules of Database Performance
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Originally published on tamiz.pro . Modern databases rely on cost-based optimizers (CBOs) to pick the fastest way to execute a SQL query. These optimizers estimate the number of rows flowing through each operator of a query plan — a step called cardinality estimation . Historically, CBOs used histo…
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- 2026-09-17 00:00 · DEV Community — AI
The 81% Query Plan Jump: How Training Small Models is Rewriting the Rules of Database Performance