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Optimise window functions: Cache aggregations per row and partition in the absence of a frame #165

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lukaseder opened this issue Jan 5, 2016 · 0 comments
Open

Optimise window functions: Cache aggregations per row and partition in the absence of a frame #165

lukaseder opened this issue Jan 5, 2016 · 0 comments
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P: Medium T: Enhancement
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Version 0.9.16

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@lukaseder
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When a window function spans RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW, then some optimisations can be performed in case the window function is a associative function, such as SUM(), MAX(), MIN(), COUNT(*), etc.
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