In Hive, you can use windowing functions to apply the ROW_NUMBER() function, which assigns a unique number to each row within a partition, based on the order of the rows within the partition. Unlike RANK() and DENSE_RANK(), ROW_NUMBER() assigns a unique number to each row, regardless of the values in any columns.
To use the ROW_NUMBER() function in Hive, you need to specify the partitioning of the rows using the PARTITION BY clause in the OVER clause. You also need to specify the ordering of the rows within each partition using the ORDER BY clause in the OVER clause.
Here’s an example of using the ROW_NUMBER() function in Hive:
