INDEX is more about creating multiple subgroups within current data and applying sequence as per defined order Though you can use it for finding the current and previous day, that is not the proper use case for it As explained, its more suitable for picking value from a particular position within these subgroups within your overall data, more like ROW_NUMBER function available in T-SQL
@@dataplatformcentral3036 ok, this is different question, can we use INDEX function to create calculated column that generates output 1,2,3... like ROW_NUMBER window function in T-SQL ?
Again not a proper use case for the function :) For generating sequence number much better option is to use Index Column transform in Power Query I've already explained it here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4XOoHe_bm3Q.html
