39ab199a3f
This PR enables the processing of multiple window frames in a single window operator. This should improve the performance of processing multiple window expressions wich share partition by/order by clauses, because it will be more efficient with respect to memory use and group processing. Author: Herman van Hovell <hvanhovell@questtec.nl> Closes #7515 from hvanhovell/SPARK-8640 and squashes the following commits: f0e1c21 [Herman van Hovell] Changed Window Logical/Physical plans to use partition by/order by specs directly instead of using WindowSpec. e1711c2 [Herman van Hovell] Enabled the processing of multiple window frames in a single Window operator. |
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test |