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scala - Sum columns of a Spark dataframe and create another dataframe

scala - Convert List of List to Dataframe - Stack Overflow

Pandas Append Rows & Columns to Empty DataFrame - GeeksforGeeks

scala - Convert List of List to Dataframe - Stack Overflow

How to create an empty DataFrame in Python? - AskPython

scala - Empty Dataset Returned while performing Join - Stack Overflow

Pandas Dataframe Add Column In First Position | Webframes.org

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scala - How to create an empty dataFrame in Spark - Stack Overflow

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