Cosmos DB-是否可以将缺少字段的返回数据联接在一起-又名，LEFT JOIN？

Question

如果其他数据不存在，我们有想要返回的数据。考虑可以返回的默认值，但是如果指定了特定值，我们则需要这些默认值。但是对于JOIN来说，如果特定值不存在，则不会返回该文档。没有LEFT加入。没有示例很难解释，因此请检查代码。

尝试了各种join和where语句，无法找到有效的语句。

SELECT
c.myId, 
 (IS_DEFINED(dm.code) ? tm.code : dm.code) as code
FROM c
JOIN dm in c.modelData
JOIN tm in c.modelData
WHERE c.partitionKey="8"
AND dm.dataScope = "default"
and tm.dataScope = "other"

示例数据为

[
    {
        "myId": "1",
        "partitionKey": "8",
        "values": [
            {
                "dataScope": "default",
                "code": "1"
            },
            {
                "dataScope": "other",
                "code": "1a"
            }
        ],
        "id": "ba884879-9b9b-3ff2-dc08-ca6168892ca5"
    },
    {
        "myId": "2",
        "partitionKey": "8",
        "values": [
            {
                "dataScope": "default",
                "code": "1a"
            },
            {
                "dataScope": "other",
                "code": "2"
            }
        ],
        "id": "864625c2-50de-5d56-9626-26b04d8ff1f2"
    },
    {
        "myId": "3",
        "partitionKey": "8",
        "values": [
            {
                "dataScope": "default",
                "code": "1a"
            },
            {
                "dataScope": "other",
                "valuesProperty": "true"
            }
        ],
        "id": "b414d2da-56c7-dff9-0cf5-5350f215639e"
    },
    {
        "myId": "4",
        "partitionKey": "8",
        "values": [
            {
                "dataScope": "default",
                "code": "2"
            }
        ],
        "id": "9df94567-5069-452c-4c1e-99ee2e72480c"
    }
]

我们想要得到的是这样的：

[
    {
        "myId": "1",
        "code": "1a"
    },
    {
        "myId": "2",
        "code": "2"
    },
    {
        "myId": "3",
    "code": "1a"
    },
    {
    "myId": "4",
    "code": "2"
    }
]

我们得到的通常是这样的：

[
    {
        "myId": "1",
        "code": "1a"
    },
    {
        "myId": "2",
        "code": "2"
    },
    {
        "myId": "3"
    }
]

标题已编辑，也许会有更多的人阅读，并希望能得到答复。