In this example, the goal is to sum the amounts in column C by week, using the dates in the range E5:E10 which are all Mondays. All data is in an Excel Table named data in the range B5:C16. This problem can be solved in a straightforward way with the...Read more
Excel's DATEDIF function is widely used for calculating the difference between two dates in years, months, or days, but it will silently return buggy results in specific cases. DATEDIF2 is a custom LAMBDA function that replaces DATEDIF with reliable date arithmetic. This article explains...Read more
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