Question

I have the following code

$query = "SELECT playerID, name,
  SUM(runs_bowled) / SUM(wickets) AS average
  FROM matchPlayer
  GROUP BY playerID "; 

BUT this returns a 0 if the person hasn’t taken a wicket, what I want is

SUM(runs_bowled) / SUM(wickets) AS average

to only activate if the SUM(wickets) is greater (or equal) than 10.

Answer 1

Depending on your needs:

SELECT 
    playerID, name,
    IF( SUM(wickets) >= 10, SUM(runs_bowled) / SUM(wickets), NULL ) AS average
FROM matchPlayer
GROUP BY playerID

Or:

SELECT 
    playerID, name,
    SUM(runs_bowled) / SUM(wickets) AS average
FROM matchPlayer
GROUP BY playerID
HAVING SUM(wickets) >= 10