Vectorization vs. Compilation in Query Execution 论文阅读笔记

Vectorization vs. Compilation in Query Execution 论文阅读笔记 Projection Vectorization 对于复杂表达式，会产生很多中间列，多余的 load/store Compilation 直接把复杂表达式写成一条，无需按表达式树执行，并且省去了多余的 load/store Selection (conjunctive) 通常 branc

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