OrientDB查询子

Question

Orientdb 2.1.11（文档数据库）是否有办法获取EmebeddedList

这是课程结构

{
    "@class":"Quote",
    "number":"Q1",
    "details":[{
      "code":"123",
      "price":10
      },{
      "code":"456",
      "price":20
      }
    ]
},{
    "@class":"Quote",
    "number":"Q2",
    "details":[{
      "code":"789",
      "price":15
      },{
      "code":"951",
      "price":25
      }
    ]
}

我想要一个查询，它将返回以下内容：

number| code | price
------|------|------
Q1    | 123  | 10
Q1    | 456  | 20
Q2    | 789  | 15
Q2    | 951  | 25

Answer 1

我已经复制了您的结构

我已经使用了这个查询

select number, details.code as code, details.price as price from (select prop.number as number, prop.details as details from (select prop from test unwind prop) unwind details)

希望能帮助到你