MySQL的GROUP_CONCAT（查詢）

Question

我想運行一個查詢，看起來像：

SELECT 
    GROUP_CONCAT(vehicles.id) 
FROM                 
vehicles       
WHERE                
cars.id = vehicles.id 

帶來了正確的數據：

1,2,3 

不過，現在我想用GROUP_CONCAT

品牌名稱

SELECT 
    GROUP_CONCAT(SELECT brand_name FROM brands WHERE vehicles.id = brand.id) 
FROM                 
vehicles       
WHERE                
vehicles.id = 100 

，所以我可以'Brand1', 'Brand2', 'Brand3'

Answer 1

嘗試

SELECT 
    GROUP_CONCAT(brands.brand_name) 
FROM                 
vehicles 
inner join brands on vehicles.id=brands.id 
inner join cars on cars.id=vehicles.id      
WHERE                
cars.id = vehicles.id