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MySQL在单一询问中加入一个项目,涉及多个项目
原标题:MySQL, join one item to multiple items in a single query
  • 时间:2010-05-19 01:50:49
  •  标签:
  • mysql
  • join

Say I ve有两个表格。 其中一份载有项目清单,一份载有项目概况。

与此类似:

<><>

+----+---------+
| id | name    |
+----+---------+
|  1 | oranges | 
|  2 | apples  | 
+----+---------+

<>Pictures

+----+---------+
| id | item_id |
+----+---------+
| 1  | 1       | 
| 2  | 2       | 
| 3  | 2       | 
+----+---------+

我的问题是:在单一询问中,能否从<条码>中选取项目<2>,并加入<条码>中的所有各行。 照片item_id 参引的参考资料?

我相信,我已经尝试了我能够想象的几乎所有东西,但没有任何东西要记住。 如果答案简单,我就表示歉意,但现在我只是 escaping。

http://www.ohchr.org。

@Andomar, 这一工作,但它的确给我带来了我希望的结果。 我猜测我应该更加清楚,并询问能否取得类似于这种结果的结果(它是一个阵列,但本组织是我之后的:

$results = array(
    [0] => array(
         id     => 1,
         name   =>  oranges ,
         images  => array(
            [0] => ...,
        ), 
    ),
    [1] => array(
         id     => 2,
         name   =>  apples ,
         images  => array(
            [0] => ...,
            [1] => ...,
        ), 
    ),
);
最佳回答
SELECT i.name, GROUP_CONCAT(p.id SEPARATOR  , ) AS pictures
FROM Items i
LEFT JOIN Pictures p
    ON p.item_id = i.id
WHERE i.id = 2

没有团体——基督徒废除酷刑行动组织,每张相片的照片就会返回不同的一行。 将<代码>的成果分类 页: 1

问题回答

加入应当做到:

select *
from Items i
left join Pictures p on p.item_id = i.id
where i.id = 2




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