MYSQL sum() for distinct rows

Question

I\'m looking for help using sum() in my SQL query:

SELECT links.id, 
       count(DISTINCT stats.id) as clicks, 
       count(DISTINCT conversions.id) as con         


        

Answer 1

For an explanation of why you were seeing incorrect numbers, read this.

I think that Jerome has a handle on what is causing your error. Bryson's query would work, though having that subquery in the SELECT could be inefficient.