Nested MySQL syntax error trying to add division operator - mysql

Question

I have a query that looks like this that executes and works perfectly:
UPDATE users
SET player_skill = (
(
SELECT
sum(avg_score)
FROM
skill
WHERE
username = "JohnDoe"
AND game = "Bingo"
) -
(
SELECT
sum(avg_score)
FROM
events
WHERE
game = "Bingo"
)
) WHERE username = "JohnDoe"
I want to add a division operator like this:
UPDATE users
SET player_skill = (
(
(
SELECT
sum(avg_score)
FROM
skill
WHERE
username = "JohnDoe"
AND game = "Bingo"
) - (
SELECT
sum(avg_score)
FROM
events
WHERE
game = "Bingo"
)
) / SELECT
COUNT(*)
FROM
skill
WHERE
username = "JohnDoe"
AND game = "Bingo"
)
WHERE
username = "JohnDoe"
It spits out an error code at me
[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'COUNT(*)
FROM
skill
WHERE
username = "JohnDoe"
AND game = "Bingo" )
) W' at line 21
I've tried for awhile but can't seem to figure out why it wont let it run. I have similar queries to this that seem fine but I cannot get this one to work.
Any help would be greatly appreciated.

Answer 1

try this
UPDATE users
SET player_skill = (
SELECT (sum(s.avg_score) - sum(e.avg_score))/COUNT(e.*)
FROM skill s
INNER JOIN events e on s.game = e.game
WHERE e.username = "JohnDoe"
AND e.username = "Bingo"
)
when you try this query you will get this error :
[Err] 1064 - You have no error in your SQL syntax. you dont need to check the manual that corresponds to your MySQL server version for the right syntax to use no near anything .