sql关联问题ABC三个表，

sql关联问题A\B\C三个表，A.id = B.aid 和A.id= C.a2id，这种关联如何写？

回复讨论(解决方案)

select A.*,B.*,C.* from Aleft join B on A.id = B.aidleft join C on A.id = B. a2id

select A.*,B.*,C.* from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

上一个写错了

select A.*,B.*,C.* from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

上一个写错了
那怎样去A表和B表和C表里的值呢？万一有一样的，name字段

select A.*,B.*,C.* from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

上一个写错了
那怎样去A表和B表和C表里的值呢？万一有一样的，name字段


你可以指定别名啊 例如

select A.name as aname,B.name as bname,C.name as cname from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

select A.*,B.*,C.* from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

上一个写错了
那怎样去A表和B表和C表里的值呢？万一有一样的，name字段


你可以指定别名啊 例如

select A.name as aname,B.name as bname,C.name as cname from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

select A.*,B.*,C.* from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

上一个写错了
那怎样去A表和B表和C表里的值呢？万一有一样的，name字段


你可以指定别名啊 例如

select A.name as aname,B.name as bname,C.name as cname from Aleft join B on A.id = B.aidleft join C on A.id = C.a2id

用thinkphp的关联形式$user->join("A on B.aid=A.id")这种形式，怎么写这种关联?

这个建议你看一下：http://doc.thinkphp.cn/manual/continuous_operation.html

这个建议你看一下：http://doc.thinkphp.cn/manual/continuous_operation.html

我现在很急，根本没时间看了，你跟我说说吧，谢谢了

$user = M('A');
$user->join("left join B on A.id=B.Id left join C on c.id=b.id")->field("A.id as aid,B,id as bid,……")->select();