查询逗号分隔的字段? [英] Querying comma separated field?

问题描述

我正在尝试基于逗号分隔的字段输出一个选择下拉选项，例如，如果用户被分配了 1 和 2 的 ID，那么我想输出位置 id 有 1 和 2:

I am trying to output a select dropdown options based on a comma separated field where if the user has been assigned an ID of 1 and 2 for example then I want to output the locations id has 1 and 2:

用户表:id(等于 1)和 usergrouplocid，这是一个带有 (1,2) 的文本字段

Users table: id (which equals 1) and usergrouplocid which is a text field with (1,2)

位置表:id 其中 auto_increment 和 loc_id 见下面的图像:

Location Table: id which auto_increment and a loc_id see iamge below:

我的查询如下:

$query = "SELECT room_location.*, client_room.*, users.* FROM room_location INNER JOIN client_room ON room_location.user_loc_id = client_room.id INNER JOIN users ON room_location.user_loc_id = users.userGroupLocID WHERE 1 IN (userGroupLocID) ORDER BY room_location.location";

上面的查询工作正常，但它只输出 1 的 id 在 usergrouplocid 中存在的位置，所以我如何让查询找到 1、2、3 或 4 等是否在 usergrouplocid 中.

The query above works fine but it only outputs where the id of 1 exists in usergrouplocid, so how do I get the query to find if 1, 2, 3 or 4 etc is in the usergrouplocid.

推荐答案

以防万一你真的需要它现在排序而不重新设计你的数据库(我会)...

Just in case you really need it sorted now without redesigning your database (which I would)...

$ids = array(1,2,4);

$query = "SELECT room_location.*, client_room.*, users.* FROM room_location INNER JOIN client_room ON room_location.user_loc_id = client_room.id INNER JOIN users ON room_location.user_loc_id = users.userGroupLocID WHERE userGroupLocID REGEXP '(^|,)(".implode('|',$ids).")(,|$)' ORDER BY room_location.location";

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