How to Create a column of unique values in an Excel LU table
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 159th installment in their series of digital spreadsheet magic tricks, you'll learn how to solve Duplicate VLOOKUP function problems with a COUNTIF formula that creates a column of unique values for the first column in the lookup table.