Update one of 2 duplicates in an sql server database table

Question

I have got a table that got a column with duplicate values. I would like to update one of a 2 duplicate values so for example row1 = tom and row2 = tom

Answer 1

Using sub-queries might work:

UPDATE table1
SET STATUS = 'F'
WHERE column1= 
   (SELECT (column1)
    FROM table1
    GROUP BY column1 
    HAVING (COUNT(column1 ) > 1))