access_time 9 months ago languageEnglish

Spark SQL - ROW_NUMBER Window Functions

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ROW_NUMBER in Spark assigns a unique sequential number (starting from 1) to each record based on the ordering of rows in each window partition. It is commonly used to deduplicate data. The following sample SQL uses ROW_NUMBER function without PARTITION BY clause: SELECT TXN.*, ROW_NUMBER() OVER ...
info Last modified by Raymond 9 months ago
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