php mysql查询仅获取列中的第一个值

Question

我有一个表名 tblnetworkstatus，我有 11 列

1. 身份证
2. 问题名称
3. affected_server
4. affected_service
5. issue_type
6. 优先级
7. 持续时间
8. 状态
9. 开始日期
10. 结束日期
11. 说明

我的表中有以下记录

id  issue_name         affected_server  affected_service    issue_type      
1   testing network     2,3             6,7                  failure

我从 tblproducts 和 tblserver 表中获取受影响的服务器和服务 ID 我有以下查询，其中我只获取第一个 id=2 的受影响服务器名称和 id =6 的受影响服务名称 我想检查这两个值对于受影响的服务器 2,3 和受影响的服务 6,7，我有以下查询，请指导我

SELECT 
            m.issue_name,m.id ,m.issue_type ,
            m.priority ,m.status,m.description ,
            m.start_date,m.end_date,m.duration,
            s.name  as server_name,p.name as product_name
            from mod_networkstatus as m 
            LEFT JOIN  tblservers as  s  ON  m.affected_server=s.id
            LEFT JOIN tblproducts as  p  ON  m.affected_service=p.id    where m.id=1

从这里我得到的只是这个结果

issue_name          server_name     product_name    
testing network     Monitor Server  Amazon S3

但我想要 Monitor Server，server1 用于 server_name 和 Amazon S3，托管帐户用于产品名称

Answer 1

试试看-

SELECT 
            m.issue_name,m.id ,m.issue_type ,
            m.priority ,m.status,m.description ,
            m.start_date,m.end_date,m.duration,
            s.name  as server_name,p.name as product_name
            from mod_networkstatus as m 
            LEFT JOIN  tblservers as  s  ON  find_in_set(s.id,m.affected_server)
            LEFT JOIN tblproducts as  p  ON  find_in_set(p.id,m.affected_service) where m.id=1

编辑1：

SELECT 
            m.issue_name,m.id ,m.issue_type ,
            m.priority ,m.status,m.description ,
            m.start_date,m.end_date,m.duration,
            GROUP_CONCAT(s.name) AS server_name,
            GROUP_CONCAT(p.name) AS product_name 
            FROM mod_networkstatus AS m 
            LEFT JOIN  tblservers AS  s  ON  FIND_IN_SET(s.id,m.affected_server)
            LEFT JOIN tblproducts AS  p  ON  FIND_IN_SET(p.id,m.affected_service) 
            WHERE m.id=1 
            GROUP BY m.id