mysql GROUP_CONCAT（查询）

Question

我正在尝试运行一个如下所示的查询：

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

带来正确的数据：

1,2,3

但是，现在我想要使用 GROUP_CONCAT 的品牌名称，

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

这样我就可以获得 'Brand1', 'Brand2', 'Brand3'

Answer 1

尝试

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