I have an excel file that I need to make some changes. I need to identify the duplicate and then put “1st” in the series column for the first dup. For the remainder dups need to put “other dups” in the series column. Is it possible? I tried vlookup and match and nothing helped. =vlookup(a1,a2,0) , match(a1,a2,0), or even if(a1=a2,”found match”)

If data starts at A2 try this formula in B2 copied down

`=IF(COUNTIF(A:A,A2)>1,IF(COUNTIF(A$2:A2,A2)=1,"1st","other dups"),"")`

### Answer：

If you want to see the **occurrence** instead of ‘**1st**‘ and ‘**other dups**‘, use the following formula in B2 copied down :

```
=IF(COUNTIF(A:A;A2)>1;COUNTIF(A$2:A2;A2);1)
```

Example:

The requirement is that column ‘A’ is sorted.

Tags: excelexcel, rest