hive 之 row_number等窗口分析函数用法
一、排序&去重分析 row_number() over(partititon by col1 order by col2) as rn 结果：1,2,3,4 rank() over(partititon by col1 order by col2) as rk 结果：1，2，2，4，5 dense_rank() over(partititon by co ...
一、排序&去重分析 row_number() over(partititon by col1 order by col2) as rn 结果：1,2,3,4 rank() over(partititon by col1 order by col2) as rk 结果：1，2，2，4，5 dense_rank() over(partititon by co ...
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