orientdb 上的 rdbms“视图”等效项

Question

在 orientdb 上是否有等效的“视图”？

我有 rdbms 背景，正在寻找一种方法将查询保存为我可以直接查询的对象。

以下面的查询为例 SELECT mobile_number AS mobile_number, verifications.verification_code[0] AS verification_code, verifications.is_verified[0] AS is_verified, Max(verifications.active_devices .@ rid) AS device_rid, verifications.active_devices .@ version AS active_version FROM guests

我想用这个名为verified_guests 的查询创建一个“视图”，然后我想使用select from verified_guests 之类的东西对verified_guests 执行一个查询

在 rdbms 世界中，我可以做到以下几点 create view verified_guests as SELECT mobile_number AS mobile_number, verifications.verification_code[0] AS verification_code, verifications.is_verified[0] AS is_verified, Max(verifications.active_devices .@ rid) AS device_rid, verifications.active_devices .@ version AS active_version FROM guests

那么我就可以select * from verified_guests。

orientdb 有与之等效或替代的吗？

感谢任何指导。

谢谢，

Answer 1

我制作了这个架构来重现您的问题：

create class guests extends V
create property guests.mobile_number integer
create property guests.name string

试试这个：

create class verified_guests extends V
INSERT INTO verified_guests FROM SELECT mobile_number, name FROM guests

这是结果：

select * from verified_guests

希望对你有帮助。

问候。