Cumulative Sum with Windows Function

qzqzqzqzqz
qzqzqzqzqz Member
in Magic ETL

I'm trying to use windows function in the new SQL tile. For example, I have a dataset with three fields: Gender, rank, students; I want to aggregate by gender, sort by rank and sum students cumulatively so the last row of each gender category contains the total number of students. I tried the following query and got an error. I wonder if it is because of my code or this function is not available in the SQL tile? What would be the best way to calculate cumulative sum? Appreciate your help!

select gender, rank, students, SUM(students) OVER (partition by gender ORDER BY rank) AS cumulative_students
 FROM tablename    ;

Error: Windows Functions are not allowed in this context: SUM

Best Answer

  • GrantSmith
    GrantSmith Coach
    Answer ✓

    I'm not certain window functions are available in the SQL tile. You can use a Rank and Window tile after you select your resulting table from your SQL query.

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Answers

  • GrantSmith
    GrantSmith Coach
    Answer ✓

    I'm not certain window functions are available in the SQL tile. You can use a Rank and Window tile after you select your resulting table from your SQL query.

    **Was this post helpful? Click Agree or Like below**
    **Did this solve your problem? Accept it as a solution!**
  • qzqzqzqzqz
    qzqzqzqzqz Member

    thank you!

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