mysql don't count row twice if column data is duplicated

Question

I am counting the rows in a mysql table called ptb_profile_views.

My table looks like this:

id  |  profile_id   | viewed_profile_id  |  date         


        

Answer 1

Try the following (assuming viewed_profile_id is 6):

SELECT COUNT(DISTINCT profile_id) FROM ptb_profile_views WHERE viewed_profile_id=6