如何从表中选择用户名有多个userId

Question

用户示例：

==================
Username   UserId
---------- --------
  A         1
  B         2
===============

和另一个像这样的表：

================================================
sendUserId    insertUserId    printUserId  .....
--------------------------------------------
    1             2              1  
================================================

我如何创建视图以选择用户信息：

sendUserName  insertUserName   printUserName
============================================
   A             B                 A

Answer 1

您可以在下面尝试-通过如下所示加入用户表的多个实例

select u1.Username as sendUserName,u2.Username as insertUserName 
,u3.Username as printUserName
from anothertable
inner join user u1 on sendUserId=u1.userid
inner join user u2 on insertUserId=u2.userid
inner join user u3 on printUserId=u3.userid