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                矢量查詢(Vectorized query) 每次處理數據時會將1024行數據組成一個batch進行處理,而不是一行一行進行處理,這樣能夠顯著提高執行速度。 ```sql -- 開啟矢量化 set hive.vectorized.execution.enabled = true; set hive.vectorized.execution.reduce.enabled = true; ```
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