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AIDatabricks Blog·April 22, 2026·Eric Liang

Are LLM agents good at join order optimization?

Summary

LLM agents can improve Databricks join order optimization, achieving 1.3x latency reduction in 80% of cases by reasoning through runtime statistics. This prototype demonstrates LLM agents' potential to act as data-driven DBAs, addressing cardinality misestimation challenges in complex SQL queries.

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