The syntax for counting the number of unique values from a list of a column using the array formula is as follows: =SUM(IF(COUNTIF(<first cell from which you count the number of unique values>:<last ...
When I first discovered Excel's dynamic array functions, my entire approach to spreadsheet design shifted. They replaced my clunky, multistep workarounds with smart, self-expanding formulas that adapt ...
Learn why the Excel AGGREGATE function fails with arrays and how to fix value errors using helper columns or dynamic LAMBDA and BYROW formulas.