$floor

L’opérateur $floor retourne l’entier le plus grand inférieur ou égal au nombre spécifié.

Syntaxe

{
  $floor: <number>
}

Paramètres

Examples

Considérez cet exemple de document de la collection des magasins.

{
    "_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
                }
            ]
        }
    ]
}

Exemple 1 : calculer le plancher des ventes totales et des remises

Pour calculer le plancher du volume moyen des ventes pour un magasin donné et le plancher des ventes par catégorie, exécutez une requête à l’aide de l’opérateur $floor pour retourner les résultats souhaités.

db.stores.aggregate([{
        $match: {
            _id: "40d6f4d7-50cd-4929-9a07-0a7a133c2e74"
        }
    },
    {
        $project: {
            name: 1,
            averageSalesFloor: {
                $floor: {
                    $divide: [
                        "$sales.totalSales",
                        {
                            $size: "$sales.salesByCategory"
                        }
                    ]
                }
            },
            categoriesWithFloorSales: {
                $map: {
                    input: "$sales.salesByCategory",
                    as: "category",
                    in: {
                        categoryName: "$$category.categoryName",
                        floorSales: {
                            $floor: "$$category.totalSales"
                        }
                    }
                }
            }
        }
    }
])

Cette requête retourne le résultat suivant :

[
  {
    "_id": "40d6f4d7-50cd-4929-9a07-0a7a133c2e74",
    "name": "Proseware, Inc. | Home Entertainment Hub - East Linwoodbury",
    "averageSalesFloor": 30372,
    "categoriesWithFloorSales": [
      {
        "categoryName": "Sound Bars",
        "floorSales": 2120
      },
      {
        "categoryName": "Home Theater Projectors",
        "floorSales": 45004
      },
      {
        "categoryName": "Game Controllers",
        "floorSales": 43522
      },
      {
        "categoryName": "Remote Controls",
        "floorSales": 28946
      },
      {
        "categoryName": "VR Games",
        "floorSales": 32272
      }
    ]
  }
]