oracle中括号是否有优先级作用？

select * from SCOTT.TEACHER teacher3_ where teacher3_.POST=&#39;管理员&nbsp; &nbsp; &nbsp; &nbsp; &#39; or teacher3_.DEPARTID=&#39;004&#39; and teacher3_.POST=&#39;系教学秘书&nbsp; &nbsp; &#39; or teacher3_.POST=&#39;系主任&nbsp; &nbsp; &nbsp; &nbsp; &#39; or<strong>( teacher3_.POST=&amp;#39;教研室主任&amp;nbsp; &amp;nbsp; &amp;#39; and teacher3_.SPECID=&amp;#39;0002&amp;#39;)</strong>
是否等于
select * from SCOTT.TEACHER teacher3_ where teacher3_.POST=&#39;管理员&nbsp; &nbsp; &nbsp; &nbsp; &#39; or teacher3_.DEPARTID=&#39;004&#39; and teacher3_.POST=&#39;系教学秘书&nbsp; &nbsp; &#39; or teacher3_.POST=&#39;系主任&nbsp; &nbsp; &nbsp; &nbsp; &#39; or <strong>teacher3_.POST=&amp;#39;教研室主任&amp;nbsp; &amp;nbsp; &amp;#39; and teacher3_.SPECID=&amp;#39;0002&amp;#39;</strong>

自己测试了一下，感觉括号好像没有有优先作用，好像被oracle数据库给忽略了。
我要查询的是管理员教师，同一个系部下的教学秘书教师，系主任教师，或者同一个系部下教师研主任教师且在同一个专业下。

and or的执行顺序好像是同一级别的哦，按照下面的hql语写，哪里有错啊?
在hibernate中执行
"from Teacher teacher where teacher.post = '"+ UserPost.admin+"' or (teacher.department.departid ='"+student.getDepartment().getDepartid()+&quo