如何选择表中的用户名有多个用户id

Question

用户例如：

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

而另一张表是这样的：

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

如何创建视图来选择用户信息：

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

Answer 1

你可以试试下面 - 用户表像下面的多个实例的加盟

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