mysql GROUP_CONCAT（查詢）

Question

我正在嘗試運行一個看起來像這樣的查詢：

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

帶來正確的數據：

1,2,3

但是，現在我想要使用GROUP_CONCAT的品牌名稱

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

所以我可以得到'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