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">
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