我想查询一行输出左表中的Id和连接表中的描述.
架构:
person
---------
id (int)
role
-------------
id (int)
description (varchar(100))
personrole
-------------
personid (int)
roleid (int)
示例数据:
person
------------
id
1
2
role
------------
id description
1 user
2 admininstrator
3 tester
personrole
-------------
personid roleid
1 1
2 1
2 2
2 3
所以,我希望输出为:
PersonId Roles
1 user
2 user;administrator;tester