OrientDb中的子查询问题

Question

我正在尝试进行一个查询，以返回类之间的信息（我计划稍后使用此查询的输出将其转换为边缘）

这是我的测试设置（我正在使用OrientDB 3.0.14）：

CREATE CLASS users
INSERT INTO users CONTENT {"name": "user1", "state_code": "CA"}
INSERT INTO users CONTENT {"name": "user2", "state_code": "VA"}
INSERT INTO users CONTENT {"name": "other3", "state_code": "FL"}

CREATE CLASS states
INSERT INTO states CONTENT {"code": "CA", "name": "California"}
INSERT INTO states CONTENT {"code": "VA", "name": "Virginia"}
INSERT INTO states CONTENT {"code": "FL", "name": "Florida"}

现在，此查询工作正常，我可以看到预期的结果：

SELECT name, state_code, $state FROM users LET $state=(SELECT FROM states WHERE code=$parent.$current.state_code)

+----+------+----------+---------------------------+
|#   |name  |state_code|$state                     |
+----+------+----------+---------------------------+
|0   |user1 |CA        |[{code:CA,name:California}]|
|1   |user2 |VA        |[{code:VA,name:Virginia}]  |
|2   |other3|FL        |[{code:FL,name:Florida}]   |
+----+------+----------+---------------------------+

因此，我尝试使用以下方法添加子查询来过滤并仅返回用户中的某些记录：

SELECT name, state_code, $state FROM (SELECT FROM users WHERE name LIKE 'user%') LET $state=(SELECT FROM states WHERE code=$parent.$current.state_code)
+----+-----+----------+---------------------------+
|#   |name |state_code|$state                     |
+----+-----+----------+---------------------------+
|0   |user1|CA        |[{code:CA,name:California}]|
|1   |user2|VA        |[{code:CA,name:California}]|
+----+-----+----------+---------------------------+

我无法找到一种方法来使计算出的值$state返回正确的值，似乎只能使用第一条记录吗？

非常感谢您提供的帮助，以帮助您解决此查询。