MySQL Performance: JOIN ON vs WHERE [duplicate]

Answer 1

I suspect that using "JOIN" is doing a "LEFT JOIN". Try using an "INNER JOIN" and see if the explain statement is the same.

SELECT 
FROM 
INNER JOIN  ON 
INNER JOIN  ON  
INNER JOIN  ON  
...

When using an inner join, I would not expect there to be a performance difference between your two queries. I would worry more about having the proper indexes. Make sure the join conditions can make a match using an indexed column.