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agggga's avatar
agggga
Frequent Visitor
2 years ago
Solved

Sum of column

I have two tables: "Comparison" and "Tests". The "Comparison" table contains information about semesters (column "Semester") and school years (column "School Year"). Meanwhile, the "Tests" table con...
  • Anonymous's avatar
    Anonymous
    2 years ago

    Hi agggga 

     

    According to the description, you can use the Merge queries feature in Power Query to get the expected result you want. 

    Merge queries overview - Power Query | Microsoft Learn

    Left outer join - Power Query | Microsoft Learn

     

    You can select the "Semester" and "School Year" columns in both tables to perform the left outer join by selecting Ctrl as you select the columns. After merging the "Tests" table to "Comparison" table, you will have a new column called "Tests" in "Comparison" table. This new column has all matching results in tables. 

     

    Then click the Expand icon on column header of "Tests" column, switch to "Aggregate" option and select Sum to aggregate the "number of student" column. Or you can select other aggregation types per your need. 

     

    Best Regards,
    Jing
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