组 concat 与条件 2 表

Question

我对这个 MYSQL statement.The 数据的 concat 有问题，如下所示：

> ID: 60abae122046b578881656e1, User: Admin, Server: localhost.local 
> ID: 60abae122046b578881656e1, User: Admin, Server: Test Device
> ID: 60aed69a89eb406cd6eaaf89, User: Steve Madden, Server: wpdesktop01
> ID: 60d09c2990d1887919cc8aff, User: Stu Hope, Server: pf-us1-smd
> ID: 60d09c2990d1887919cc8aff, User: Stu Hope, Server: pfv-us1-smd
> ID: 5d826b16827c0805683af8f5, User: test, Server: pf-us1-ansible
> ID: 5d826b16827c0805683af8f5, User: test, Server: pf-us1-dmz-sftp
> ID: 5c9b585c235ec76b0161c648, User: Rodrigo, Server: pf-us1-dev
> ID: 5c9b585c235ec76b0161c648, User: Rodrigo, Server: pf-us1-ansible
> ID: 5c9b585c235ec76b0161c648, User: Rodrigo, Server: pf-us1-zabbix
> ID: 5c9b585c235ec76b0161c648, User: Rodrigo, Server: pf-us1-sm

想法是让它看起来像这样：

> ID: 60abae122046b578881656e1, User: Admin, Server: localhost.local, Test Device
> ID: 60aed69a89eb406cd6eaaf89, User: Steve Madden, Server: wpdesktop01
> ID: 60d09c2990d1887919cc8aff, User: Stu Hope, Server: pf-us1-smd, pfv-us1-smd
> ID: 5d826b16827c0805683af8f5, User: test, Server: pf-us1-ansible, pf-us1-dmz-sftp
> ID: 5c9b585c235ec76b0161c648, User: Rodrigo, Server: pf-us1-dev, pf-us1-ansible, pf-us1-zabbix, pf-us1-sm

我目前的陈述是这样的：

$sql_modal = 'SELECT 
  pf_jc_user_audit.jc_id,
  pf_jc_user_audit.jc_user,
  pf_jc_user_server_ass.system_id,
  pf_jc_servers.hostname
FROM 
  pf_jc_user_audit,
  pf_jc_user_server_ass, pf_jc_servers
WHERE 
  pf_jc_user_audit.jc_id = pf_jc_user_server_ass.jc_id_ass and  pf_jc_user_server_ass.system_id = pf_jc_servers.system_id';

我试过修改：

group_concat(pf_jc_servers.hostname)

然后：

group by pf_jc_user_audit.jc_id

但是运气不好，有什么想法吗？

Answer 1

首先，使用带有 ON 子句和表别名的适当连接来缩短代码并使其更具可读性。

然后按jc_id和jc_user分组：

SELECT ua.jc_id, ua.jc_user,
       GROUP_CONCAT(s.hostname) AS hostname
FROM pf_jc_user_audit ua
INNER JOIN pf_jc_user_server_ass us ON ua.jc_id = us.jc_id_ass
INNER JOIN pf_jc_servers s ON us.system_id = s.system_id
GROUP BY ua.jc_id, ua.jc_user

组 concat 与条件 2 表

Group concat with 2 tables with conditions

php

mysql

join

group-by

group-concat