Question

I was kindly given this code suggestion for getting the ranking of each person by score, is there a way of declaring the var without using a semicolon? I found one way of declaring from within the query but I couldn’t get it to work when using a sub-query like that below:

SET @rank := 0;
SELECT a.name, 
   a.AvScore, 
   @rank := @rank + 1 
FROM   (SELECT name, 
           Avg(score) AS AvScore 
    FROM   results 
    GROUP  BY name) a
ORDER  BY a.AvScore 

Answer 1

try it like that

    SELECT a.name, 
           a.AvScore, 
           @rank := @rank + 1 
    FROM   (SELECT name, 
           Avg(score) AS AvScore ,(SELECT @rank :=0) v
    FROM   results 

    GROUP  BY name) a
    ORDER  BY a.AvScore