Orient DB - 如何使用匹配语句删除？

Question

使用遍历的匹配语句是否有一种好方法可以删除？

我正在尝试这样的删除声明，它会抓住属于999教室的学生。无论如何它似乎无法正常工作。

delete vertex from (select 
from 
(match 
  {class: student, as: student}
  .in(){class: classroom, as: classroom, while:(true), where: (id = 999)}
   return student))

这不作为子查询工作。

Answer 1

我最初使用遍历进行操作。然后我注意到它没有作为“节点”返回。请注意，我必须“扩大”退回的学生！

delete vertex from (select expand(student)
from 
(match 
  {class: student, as: student}
  .in(){class: classroom, as: classroom, while:(true), where: (id = 999)}
  return student))