Count with LEFT JOIN shows only one row - mysql

Question

I have the following data in my database:
scu_banks:
---------------------------------
| id | type | name |
|-------------------------------|
| 1 | 1 | One |
| 2 | 1 | Two |
| 3 | 2 | Three |
| 4 | 3 | Four |
---------------------------------
scu_statement:
---------------------------------
| id | code | status |
|-----------------------------------|
| 1 | 1 | 0 |
| 2 | 1 | 1 |
| 3 | 2 | 0 |
| 4 | 1 | 0 |
-------------------------------------
What I want to do is I want to select all the rows in table scu_banks and calculate how many rows I have with the status 0. The data should be represented like:
--------------------------------------------------------------
| scu_banks.type | scu_banks.name | status | scu_banks.id |
--------------------------------------------------------------
| 1 | One | 2 | 1 |
| 1 | Two | 0 | 2 | //There is no row with status 0
| 2 | Three | 0 | 3 |
| 3 | Four | 0 | 4 |
--------------------------------------------------------------
When I run my sql statement I get the following data:
---------------------------------------------------------------
| scu_banks.type | scu_banks.name | status | scu_banks.id |
--------------------------------------------------------------
| 1 | One | 2 | 1 |
---------------------------------------------------------------
The data I get in this case is correct. 2 it the total count of all the rows in table scu_statement. The statement also dont shows the other rows in the database.
Does someone know what is wrong with my sql statement?
Here is my sql statement:
SELECT b.type 'scu_banks.type',
b.name 'scu_banks.name',
count(y.status) 'status',
b.id 'scu_banks.id'
FROM scu_banks b
LEFT JOIN (SELECT s.code, count(s.status) status
FROM scu_bankstatement s
WHERE status='0'
GROUP BY s.code) y
ON y.code = b.id

Answer 1

You need a GROUP BY in your outer query, otherwise the query simply counts status for all banks. You can also simplify your query by just LEFT JOINing the two tables on code/id and status = 0
SELECT b.type `scu_banks.type`,
b.name `scu_banks.name`,
COUNT(s.status) `status`,
b.id `scu_banks.id`
FROM scu_banks b
LEFT JOIN scu_statement s ON s.code = b.id AND s.status = 0
GROUP BY b.id, b.name, b.type
Output
scu_banks.type scu_banks.name status scu_banks.id
1 One 2 1
1 Two 1 2
2 Three 0 3
3 Four 0 4
Demo on dbfiddle