In this example, the goal is to look up amounts for 1000 invoice numbers in a table that contains 1 million invoices. The catch is that not all of the 1000 invoice numbers exist in the source data. In fact, most of the invoice numbers do not appear in column B. This means we need...Read more
The LET function lets you define named variables in a formula. There are two primary reasons you might want to do this: (1) to improve performance by eliminating redundant calculations and (2) to make more complex formulas easier to read and write. Once a variable is named, it can...Read more
How to keep random numbers from changing in Excel? Excel's random functions like RAND and RANDARRAY recalculate every time you edit your worksheet, making it impossible to maintain stable random results. This article shows you how to build a seeded random number generator using Excel's...Read more
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