Inner Join for four tables is not working? - mysql

Question

I have four tables mls_user, mls_category, mls_entry, and bonus_point.
Following are the tables:
mls_user
*--------------------------*
| id | store_id | name |
*--------------------------*
| 1 | 101 | Santosh |
| 2 | 101 | Aman |
| 3 | 102 | Ankit |
| 4 | 101 | Suman |
| 5 | 101 | Ramesh |
*--------------------------*
mls_category
*----------------------------------------*
| cat_no | store_id | cat_type | cat_val |
*----------------------------------------*
| 1 | 101 | running | 1 |
| 2 | 101 | cycling | 4 |
| 3 | 102 | running | 1 |
| 4 | 102 | swiming | 2 |
*----------------------------------------*
mls_entry
*----------------------------------------------------------*
| id | user_id | store_id | category | distance | status |
*----------------------------------------------------------*
| 1 | 1 | 101 | 1 | 5 | Approved |
| 2 | 1 | 101 | 1 | 10 | Approved |
| 3 | 1 | 101 | 2 | 50 | Approved |
| 4 | 1 | 101 | 1 | 10 | Approved |
| 5 | 2 | 101 | 1 | 5 | Approved |
*----------------------------------------------------------*
bonus_point
*---------------------------------------------------------*
| bns_id | user_id | store_id | bonus_points | bonus_type |
*---------------------------------------------------------*
| 1 | 1 | 101 | 100 | fixed |
| 2 | 2 | 101 | 25 | % |
*---------------------------------------------------------*
Now from these four tables, I want below output:
*--------------------------------------------------------------*
| name | points | bonus_points | bonus_type | Total_Points |
*--------------------------------------------------------------*
| Santosh | 25 | 100 | fixed | 125 |
| Aman | 5 | 25 | % | 30 |
| Suman | 0 | 0 | - | 0 |
| Ramesh | 0 | 0 | - | 0 |
| Ankit | 0 | 0 | - | 5 |
*--------------------------------------------------------------*
I am using the following query but this query only shows the value for Santosh and aman
SELECT u.id, u.name, COALESCE(t1.points, 0) AS points, b.bonus_points
FROM mls_user u
LEFT JOIN
(SELECT e.user_id, SUM(e.distance / c.cat_value) AS points
FROM mls_entry e
INNER JOIN mls_category c ON e.store_id = c.store_id AND e.category = c.cat_no
WHERE e.status='approved' AND e.store_id = '101'
GROUP BY e.user_id ) t1 ON u.id = t1.user_id
INNER JOIN bonus_points b ON b.user_id = u.id
WHERE u.store_id = '101'
ORDER by points DESC
So where I am doing wrong in my query, Please help me in this.

Answer 1

In your bonus_points table you have only two entry related to user 1 and 2 (Santosh and aman) if you use INNER JOIN then you obtain only these user
in this case you need left JOIN for bonus_points Too
SELECT u.id, u.name, COALESCE(t1.points, 0) AS points, ifnull(b.bonus_points,0) bonus_point
FROM mls_user u
LEFT JOIN (
SELECT e.user_id, SUM(e.distance / c.cat_value) AS points
FROM mls_entry e
INNER JOIN mls_category c ON e.store_id = c.store_id
AND e.category = c.cat_no
WHERE e.status='approved'
AND e.store_id = '101'
GROUP BY e.user_id
) t1 ON u.id = t1.user_id
LEFT JOIN bonus_points b ON b.user_id = u.id
WHERE u.store_id = '101'
ORDER by points DESC