具有多个内部联接的SQL查询

Question

到目前为止工作

SELECT subject_en_name FROM subjects 
INNER JOIN teachers_subjects 
  ON subjects.subject_id = teachers_subjects.subject_id 
WHERE teachers_subjects.teacher_user_id = 6

这让我的主题名称很好。但是，我想不选择teachers_subjects.teacher_user_id，而是选择users_teachers.user_id。

我尝试过类似的事情：

SELECT subject_en_name FROM subjects 
INNER JOIN teachers_subjects 
  ON subjects.subject_id = teachers_subjects.subject_id 
INNER JOIN users_teachers 
  ON teachers_subjects.teacher_user_id = users_teachers.user_id 
WHERE users_teachers.user_id = 98

但是当我这样做时，它不会返回任何结果，它应返回2行

由于