jion("A on B.aid=A.id)->jion("B on C.bid=B.id)->j"/> jion("A on B.aid=A.id)->jion("B on C.bid=B.id)->j">
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thinkphp四级关联查询如何写

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2016-06-13 12:10:23786browse

thinkphp四级关联查询怎么写
thinkphp四级关联查询怎么写？关系：A在B的aid，B在C的bid，C在D的Cid，怎样关联起来呢？
A-->B-->C-->D
M("D")->jion("A on B.aid=A.id)->jion("B on C.bid=B.id)->jion("C on D.cid=C.id) 这样写不对
------解决思路----------------------
直接用MANY_TO_MANY

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