duplicate row in many to many relationship mysql - mysql

Question

I have many to many relation problem in this scenario
Table : customer_master
+---------+-----------+
| cust_id | cust_code |
+---------+-----------+
| 1 | S00333 |
+---------+-----------+
Table : customer_supply_chain
+----------------+-----------+-------------------+
| supply_cust_id | cust_code | supplye_cust_code |
+----------------+-----------+-------------------+
| 1 | S00333 | HI00001 |
| 2 | S00333 | MA00010 |
+----------------+-----------+-------------------+
Table : customer_vehicle
+----------------+-----------+------------------+
| cust_vehicl_id | cust_code | vehicle_model_id |
+----------------+-----------+------------------+
| 1 | S00333 | 161 |
| 2 | S00333 | 162 |
+----------------+-----------+------------------+
Mysql Query is :
SELECT
cv.vehicle_model_id,
csc.supply_cust_code AS suppl_code
FROM customer_master cm
LEFT JOIN customer_supply_chain csc
ON csc.cust_code = cm.cust_code
LEFT JOIN customer_vehicle cv
ON cv.cust_code = cm.cust_code
WHERE cm.cust_code = 'S00333'
result of query
+------------------+------------------+
| vehicle_model_id | supply_cust_code |
+------------------+------------------+
| 161 | HI00001 |
| 162 | HI00001 |
| 161 | MA00010 |
| 162 | MA00010 |
+------------------+------------------+
our desire output is
+------------------+------------------+
| vehicle_model_id | supply_cust_code |
+------------------+------------------+
| 161 | HI00001 |
| 162 | MA00010 |
+------------------+------------------+
The problem is in every row is repeated by supply_cust_code and vehicle_model_id,
We try with distinct and group by and other fixes (show in stack overflow) but not work,
If we use group by so we can not get all data and we don'T want to use group_concat , we cant rectify the problem ,
We just try to make getting all row but not repeated

Answer 1

I don't know why you are getting those duplicates, because the sample data does not support it, but you can either try using SELECT DISTINCT:
SELECT DISTINCT cv.vehicle_model_id,
csc.supply_cust_code AS suppl_code
FROM ...
Or you can try grouping on the model ID and supply customer code:
SELECT cv.vehicle_model_id,
csc.supply_cust_code AS suppl_code
FROM customer_master cm
LEFT JOIN customer_supply_chain csc
ON csc.cust_code = cm.cust_code
LEFT JOIN customer_vehicle cv
ON cv.cust_code = cm.cust_code
WHERE cm.cust_code = 'S00333'
GROUP BY cv.vehicle_model_id,
csc.supply_cust_code