mysql - 从具有间接关系(从另一个表)的两个表中检索数据

Question

我有3张 table

Division 

id    name  
1       A 
2       B


Region

Id       name     Divsion_id
01      Rim          A


Territory

Id       name       region_id

001      a               01
002      b               01
003      c               01

现在我想编写一个查询，让用户选择部门并显示其各自的领土。

我怎样才能把这个查询写成

there is no direct relation between Divsion and Region?

Answer 1

select t.* from territory t
inner join region r on r.id = t.region_id
inner join devision d on d.name = r.division_id
where d.name = 'A'