Php 仅显示组#concat'；哪一列？

我有一个这样的数据库结构

 Car
 - id   
 - carname
 - image
 - category
 - status

Parts
 - partid
 - partname

CarParts
 - carpartid
 - carid(fk)
 - partid(fk)
 - amountid(fk)

Category
 - id
 - categoryname

Amount
 - amountid
 - amountvalue

我的问题是：

SELECT group_concat(parts.partname) as parts FROM car left join  carparts on car.id = carparts.carpartid 
left join  parts on parts.partid = carparts.carpartid
left join amount on amount.amountid = carparts.amountid where status = 1
group by car.id

但这只是显示部分，没有其他我想要的

• 卡纳姆
• 形象
• 类别
• 地位

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您只需在select中传递列名，请参见下面的示例：

SELECT 
    group_concat(parts.partname) as parts,
    car.carname,
    car.image,
    car.category,
    car.status
FROM car 
    left join  carparts on car.id = carparts.carpartid 
    left join  parts on parts.partid = carparts.carpartid
    left join amount on amount.amountid = carparts.amountid where status = 1
group by car.id

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您只输出部分信息如何输出所有信息？而且，这显然是错误的：

car.id=carparts.carpartid