加入两个表或在MySQL

Question

我需要连接两个表，并得到输出，因为我下面说选择查询，

这里我的问题是我不能内部联接两个表，并得到因为输出它引用了team1和team2的相同列名（它看起来像“select ct.teamname，ct2.teamname from clm_schedule cs”，它给了我一个错误）。我可以在下面两个单独的查询中做到这一点，

select ct.teamname as team1 from clm_schedule cs inner join clm_team ct on ct.teamid = cs.team1 

select ct2.teamname as team2 from clm_schedule cs2 inner join clm_team ct2 on ct2.teamid = cs2.team2 

但我无法加入它得到一个结果集。请给我一个方法。

Answer 1

你应该能够做到这一点：

SELECT ct1.teamname as team1 ,ct2.teamname as team2 
FROM clm_schedule cs 
LEFT JOIN clm_team AS ct1 
    ON ct1.teamid = cs.team1 
LEFT JOIN clm_team AS ct2 
    ON ct2.teamid = cs.team2;