Question

I have some tables liek this

User         : id , username
answers      : id , answers , is_correct , question_id
user_answers : user_id , question_id , answer_id , date
questions    : id , question , category
category     : id name

Now what i am trying to do is count the correct answers user have given on each category. My query is this

SELECT
  u.`user_name` AS `UserName`,
  u.`user_id`   AS `UserId`,
  sum(a.is_correct) AS `Score`,
  group_concat(distinct c.name) AS `Quizes`
FROM users_answers ua
  LEFT JOIN answers a
    on a.id = ua.answer_id
  LEFT JOIN users u
    ON u.user_id = ua.user_id
  left join questions q
    on q.id = a.question_id
  left join categories c
    on c.id = q.cat_id
WHERE a.is_correct = 1
GROUP BY u.user_id
ORDER BY `Score` desc, ua.date desc;

It brings the result ok but i need to get the total score seperatly for each category.

EDITS

select
  s.UserName,
  s.UserId,
  GROUP_CONCAT(Score) AS CategoryScores,
  sum(s.TotalScore) as TotalScore,
  s.Quizes,
  s.LastPlayed
from (select
        u.`user_name` AS `UserName`,
        u.`user_id`   AS `UserId`,
        sum(a.is_correct) AS `Score`,
        sum(a.is_correct) AS `TotalScore`,
        group_concat(distinct c.name) AS `Quizes`,
        ua.date       as `LastPlayed`,
        c.id          as CategoryId
      FROM users_answers ua
        LEFT JOIN answers a
          on a.id = ua.answer_id
        LEFT JOIN users u
          ON u.user_id = ua.user_id
        left join questions q
          on q.id = a.question_id
        left join categories c
          on c.id = q.cat_id
      WHERE a.is_correct = 1
      GROUP BY u.user_id, CategoryId) s
GROUP BY UserId
ORDER BY `TotalScore` desc, LastPlayed desc;

Thanks Michael but the problem here is that now i cant get categories names in group concat.

Answer 1

Try This

select
  UserName   as UserName,
  UserId,
  group_concat(Score) as Score,
  sum(TotalScore) as TotalScore,
  LastPlayed,
  group_concat(Quizes)    QuizNames
from (SELECT
        u.`user_name` AS `UserName`,
        u.`user_id`   AS `UserId`,
        count(ua.`id`) AS `Score`,
        count(ua.`id`) AS `TotalScore`,
        ua.date       as `LastPlayed`,
        group_concat(distinct c.name) as `Quizes`
      FROM users_answers ua
        LEFT JOIN answers a
          on a.id = ua.answer_id
        LEFT JOIN users u
          ON u.user_id = ua.user_id
        left join questions q
          on q.id = a.question_id
        left join categories c
          on c.id = q.cat_id
      WHERE a.is_correct = 1
      GROUP BY u.user_id desc,c.id
      ORDER BY `Score` desc, ua.date desc,u.user_id) sub
GROUP BY UserId desc
ORDER BY `TotalScore` desc, LastPlayed desc