问题描述
我有 2 个 mysql 表:
I have 2 mysql tables:
car_model:
id (int) (Primary Key)
title (varchar)
id_brand (int) FK to car_brand table
car__car_model: - relation many to many
id_model (int)
id_advice_model (int)
car__car_model中有如下数据:
In car__car_model there are the following data:
(id_model) (id_advice_model)
12 12
12 45
12 67
12 78
13 13
13 12
13 67
13 105
我想像这样获取这些数据:
And I want to fetch this data like this:
12 12,45,67,78
13 13.12.67,105
我像这样使用 group_concat 和 group by:
I use group_concat and group by like this:
SELECT ccm.id_model,group_concat(ccm.id_advice_model) FROM car__car_model as ccm group by ccm.id_model
问题:如果 ids - 例如对于 12、45、67、78,如何从 car_model 表中获取此字符串的标题.我想在 1 个查询中完成 - 自定义我的查询
Question: How can fetch titles from car_model table for this string if ids - for example for 12,45,67,78. And I want to do it in 1 query - to customize my query
更新:现在我还有一个问题:我还有一张桌子:
Updated: And Now I have another question: I Have one more table:
car_brand:
id (int) (PK)
title (varchar)
在我的 car_model 表中有一个字段 id_brand
and in my car_model table there is a field id_brand
问题 2:我如何从 car_model 中获取标题形式 car_brand - 像这样 - 福特福克斯、菲亚特 Linea 等等 - 现在我(在你的帮助下)只从 car_model 中获取标题现在我有:12 - Focus,Linea
Question 2: How can i fetch title form car_brand with the title from car_model - like this - Ford Focus, Fiat Linea and so on - Now I get (with you help) to fetch only title from car_model Now I have: 12 - Focus,Linea
更新:我使用 -
SELECT
id_model,group_concat(concat(cb.title,' ',cm.title))
FROM
car__car_model as ccm
inner join car_model cm on (cm.id = ccm.id_advice_model)
inner join car_brand cb on (cb.id=cm.id_brand)
group by ccm.id_model
推荐答案
试试这个::
SELECT
ccm.id_model,group_concat(cm.tile, SEPARATOR ',')
FROM
car__car_model as ccm
inner join car_model cm on (cm.id = ccm.id_advice_model)
group by ccm.id_model
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