pyspark udf用戶自定義函數的用法

看了許多博客看的頭暈轉向，廢話太多，其實很簡單html 不廢話，直接上乾貨python 例子一：git 例子二：github   https://docs.databricks.com/spark/latest/spark-sql/udf-python.html#use-udf-with-dataframessql https://gist.github.com/zoltanctoth/2decc

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