Question

我的run集合中有这样的文档：

{
    "_id" : ObjectId("55d4410544c96d6f6578f893"), 
    "runName" : "1439973637614",
    "suiteList": [
        {
            "suiteStatus": "PASS"
        },
        {
            "suiteStatus": "PASS"
        }
    ]
}

{
    "_id" : ObjectId("55d44eb4c0422e7b8bffe76b"), 
    "runName" : "1439977140396",
    "suiteList": [
        {
            "suiteStatus": "FAIL"
        },
        {
            "suiteStatus": "PASS"
        }
    ]

}

{
    "_id" : ObjectId("55d44f0bc0422e7b8bffe76f"), 
    "runName" : "1439977227370",
    "suiteList": [
        {
            "suiteStatus": "FAIL"
        },
        {
            "suiteStatus": "FAIL"
        }
    ]

}

现在我想得到如下输出：

{
    "runName" : "1439973637614",
    {
        "pass": 2,
        "fail": 0
    }
}

{
    "runName" : "1439977140396",
    {
        "pass": 1,
        "fail": 1
    }
}

{
    "runName" : "1439977227370",
    {
        "pass": 0,
        "fail": 2
    }
}

我知道如何使用以下方法获取suiteList中所有级别的传递和失败计数列表：

db.testruns.aggregate([
    { $unwind: "$suiteList" },
    { $group: { _id: "$suiteList.suiteStatus", count: { $sum: 1 } } }
]);

但我不确定如何达到我想要的预期输出。

Answer 1

您的聚合查询需要进行一些修改，您应该在组中使用$cond，这样聚合如下：

db.testruns.aggregate({
    "$unwind": "$suiteList"
}, {
    "$group": {
        "_id": "$runName",
        "pass": {
            "$sum": {
                "$cond": {
                    "if": {
                        "$eq": ["$suiteList.suiteStatus", "PASS"]
                    },
                    "then": 1,
                    "else": 0
                }
            }
        },
        "fail": {
            "$sum": {
                "$cond": {
                    "if": {
                        "$eq": ["$suiteList.suiteStatus", "FAIL"]
                    },
                    "then": 1,
                    "else": 0
                }
            }
        }
    }
}).pretty()

MongoDB：计算子文档中的不同数据

1 个答案: