people · May 16, 2026
QuestDB Publishes Deep Dive on WINDOW JOIN Parallelization and Vectorization
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QuestDB published a technical deep dive on May 13, 2026, detailing how the team parallelized and vectorized WINDOW JOIN. The update includes benchmarks showing 5x faster performance than the prior QuestDB implementation on tested workloads against Timescale, DuckDB, and ClickHouse. QuestDB engineers released the analysis alongside code examples and performance data. QuestDB previously shipped WINDOW JOIN without this level of parallel and vectorized optimization.
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