How to assign value to a columns
kindly help on how to generate a script, I want to create a new column, assign value {A, B, C, D, E} by judging column called "rundate", same row with oldest date need assign "A". for rows with same date, need assign same value, for rows with different date need assign different value, like the pic shows. rundate
4/1/2020 7:18
4/1/2020 7:18
4/1/2020 7:18
4/1/2020 7:47
4/1/2020 8:13
4/1/2020 8:13
4/1/20...
vince_faller