共用方式為

$bitsAnyClear

這個運算符用來比對檔，其中任何位位置在位掩碼中指定的位置都是清楚的（也就是 0）。 它適用於使用二進位資料或儲存為整數旗標的文件進行查詢。 此運算子可根據特定位模式啟用有效率的查詢。

語法

{
  <field>: { $bitsAnyClear: <bitmask> }
}

參數

參數 Description
field 要查詢之檔中的欄位。
<bitmask> 位掩碼，其中每個位位置都代表一個位置，以檢查它是否清楚（0）。

範例

請參考商店集合中的此範例檔。

{
    "_id": "0fcc0bf0-ed18-4ab8-b558-9848e18058f4",
    "name": "First Up Consultants | Beverage Shop - Satterfieldmouth",
    "location": {
        "lat": -89.2384,
        "lon": -46.4012
    },
    "staff": {
        "totalStaff": {
            "fullTime": 8,
            "partTime": 20
        }
    },
    "sales": {
        "totalSales": 75670,
        "salesByCategory": [
            {
                "categoryName": "Wine Accessories",
                "totalSales": 34440
            },
            {
                "categoryName": "Bitters",
                "totalSales": 39496
            },
            {
                "categoryName": "Rum",
                "totalSales": 1734
            }
        ]
    },
    "promotionEvents": [
        {
            "eventName": "Unbeatable Bargain Bash",
            "promotionalDates": {
                "startDate": {
                    "Year": 2024,
                    "Month": 6,
                    "Day": 23
                },
                "endDate": {
                    "Year": 2024,
                    "Month": 7,
                    "Day": 2
                }
            },
            "discounts": [
                {
                    "categoryName": "Whiskey",
                    "discountPercentage": 7
                },
                {
                    "categoryName": "Bitters",
                    "discountPercentage": 15
                },
                {
                    "categoryName": "Brandy",
                    "discountPercentage": 8
                },
                {
                    "categoryName": "Sports Drinks",
                    "discountPercentage": 22
                },
                {
                    "categoryName": "Vodka",
                    "discountPercentage": 19
                }
            ]
        },
        {
            "eventName": "Steal of a Deal Days",
            "promotionalDates": {
                "startDate": {
                    "Year": 2024,
                    "Month": 9,
                    "Day": 21
                },
                "endDate": {
                    "Year": 2024,
                    "Month": 9,
                    "Day": 29
                }
            },
            "discounts": [
                {
                    "categoryName": "Organic Wine",
                    "discountPercentage": 19
                },
                {
                    "categoryName": "White Wine",
                    "discountPercentage": 20
                },
                {
                    "categoryName": "Sparkling Wine",
                    "discountPercentage": 19
                },
                {
                    "categoryName": "Whiskey",
                    "discountPercentage": 17
                },
                {
                    "categoryName": "Vodka",
                    "discountPercentage": 23
                }
            ]
        }
    ]
}

欄位 storeFeatures 是代表各種存放區功能的位掩碼整數。 每個位都會對應至功能：

位元 價值觀 特徵 / 功能
0 1 In-Store 取貨
1 2 停車
2 4 輪椅存取
3 8 開啟24小時
4 16 Pet-Friendly
5 32 免費 Wi-Fi
6 64 廁所
7 128 送貨上門

範例 1：尋找沒有 Wi-Fi 或店內取貨服務的商店

此查詢會擷取沒有 Wi-Fi OR 店內取貨的商店 （位元 0 和 5）

db.stores.find({
    storeFeatures: {
        $bitsAnyClear: [0, 5]
    }
}, {
    _id: 1,
    name: 1,
    storeFeatures: 1
}).limit(5)

等效：

db.stores.find({
        storeFeatures: {
            $bitsAnySet: 33
        }
    }, // 1 + 32
    {
        _id: 1,
        name: 1,
        storeFeatures: 1
    }).limit(5)

此查詢傳回的前五個結果如下：

[
  {
    "_id": "a715ab0f-4c6e-4e9d-a812-f2fab11ce0b6",
    "name": "Lakeshore Retail | Holiday Supply Hub - Marvinfort",
    "storeFeatures": 38
  },
  {
    "_id": "7e53ca0f-6e24-4177-966c-fe62a11e9af5",
    "name": "Contoso, Ltd. | Office Supply Deals - South Shana",
    "storeFeatures": 86
  },
  {
    "_id": "44fdb9b9-df83-4492-8f71-b6ef648aa312",
    "name": "Fourth Coffee | Storage Solution Gallery - Port Camilla",
    "storeFeatures": 222
  },
  {
    "_id": "e6410bb3-843d-4fa6-8c70-7472925f6d0a",
    "name": "Relecloud | Toy Collection - North Jaylan",
    "storeFeatures": 108
  },
  {
    "_id": "9024d615-eed0-429a-a098-6640207cc2b6",
    "name": "Adatum Corporation | Paper Product Mart - Lake Coralie",
    "storeFeatures": 204
  }
]

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