Learn why the Excel AGGREGATE function fails with arrays and how to fix value errors using helper columns or dynamic LAMBDA and BYROW formulas.

Dynamic arrays have brought significant flexibility to Excel, allowing formulas to automatically expand or contract across cells. However, this functionality introduces a common issue: formatting ...

If you get the You can’t change part of an array error in Microsoft Excel, this post will help you fix the error. An array is essentially a collection of items ...

Excel’s BYCOL() and BYROW() functions evaluate data across columns and rows, returning an array result set allowing you to bypass a lot of work. Most Microsoft Excel functions are autonomous—one ...

Dynamic arrays change the rules for formula output in Excel. When I write a formula that returns a list by default, I need to decide whether I want the result to spill across a range of cells or ...

Excel doesn’t have a built-in AVERAGEIF() function, but you can still average values, conditionally. Excel has SumIf and CountIf, but no AverageIf. However, with a little array magic, you can get ...

An curved arrow pointing right. {} These brackets mean something magical is happening inside your Excel formula. An "Array" function allows you to perform mathematical operations on many cells instead ...

In addition to the new SORT function, you may also find the new FILTER and UNIQUE array functions useful. For example, the worksheet on the next page contains a detailed listing of invoices in columns ...