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    Comparing two dataset outputs

    Member
    in Charting

    I am trying to find a solution to compare output of two datasets. Both have same columns and same timeline but I want to create a flag if there is any difference in any of the col when we compare both outputs.

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    • Member

      The data is refreshed weekly and the purpose is to find the differences. I merge both datasets in one but then I am struggling to proceed the way to figure out difference in Col A Vs Col A of second table.

    • Coach

      You can use an ETL with both datasets as an input and then left join them together based on your columns and see which ones are are missing values, that will identify where your records don't exactly line up.

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    • Member

      Left join then create a formula to get the difference?

    • Coach

      You can use a group by with the COUNT aggregation to count how many records matches compared to the number of records in your original dataset then use a formula to do total - count to get the difference / records which don't match.

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    • Coach

      Depending on the purpose of your comparison, you may want to consider a Full Outer Join instead of a Left Join. That way you can check if records are missing from either dataset instead of just one.

    • Contributor

      There should be a compare tile in magic similar to the compare in notepad++

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