使用COSMOSSQL查询选择数组元素

需要选择数组元素作为行元素

Cosmos文档JSON

一,

二,

我需要的结果是这样的

---

请尝试以下查询：

SELECT c.CountyId, c.CountyCode, d.CityId, d.CityName FROM c
Join d in c.Cities

这将产生以下输出：

[
    {
        "CountyId": 1,
        "CountyCode": "Abbeville",
        "CityId": 1,
        "CityName": "Arborville"
    },
    {
        "CountyId": 2,
        "CountyCode": "Adair",
        "CityId": 2,
        "CityName": "Ballard"
    },
    {
        "CountyId": 2,
        "CountyCode": "Adair",
        "CityId": 3,
        "CityName": "Brashear"
    }
]

---

请编辑您的问题，以显示您尝试了什么、遇到了什么问题、预期输出与实际输出等。至于起点：您是否考虑过进行自连接（如Cosmos DB文档中所述）？感谢您的建议，我是Cosmos DB的新手，所以不知道。这就是我一直在寻找的，谢谢！

SELECT c.CountyId, c.CountyCode, d.CityId, d.CityName FROM c
Join d in c.Cities

[
    {
        "CountyId": 1,
        "CountyCode": "Abbeville",
        "CityId": 1,
        "CityName": "Arborville"
    },
    {
        "CountyId": 2,
        "CountyCode": "Adair",
        "CityId": 2,
        "CityName": "Ballard"
    },
    {
        "CountyId": 2,
        "CountyCode": "Adair",
        "CityId": 3,
        "CityName": "Brashear"
    }
]