In Excel we have the VLOOKUP
function that looks for a value in a column in a table and then returns a value from a given column in that table if it finds something. If it doesn't, it produces an error.
Is there a function that just returns true or false depending on if the value was found in a column or not?
You could wrap your VLOOKUP() in an IFERROR()
Edit: before Excel 2007, use =IF(ISERROR()...)