v.21.1Performance ImprovementsReplace PODArray with PODArrayWithStackMemory in AggregateFunctionWindowFunnelData for Performance ImprovementPublished: November 25, 2025Official CH changelog textReplace PODArray with PODArrayWithStackMemory in AggregateFunctionWindowFunnelData to improve windowFunnel function performance. #18817 (flynn).PreviousNext