A range of values or an array constant.
Required, unless column_num is present. Selects the row in array from which to return a value. If row_num is omitted, column_num is required.
Optional. Selects the column in array from which to return a value. If column_num is omitted, row_num is required.
Uses an index to choose a value from a reference or array.
Category: Lookup and reference