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The $divide
operator divides two numbers and returns the quotient. The $divide operator returns an error if the divisor is zero.
{
$divide: [ <dividend>, <divisor> ]
}
Parameter | Description |
---|---|
<dividend> |
Any valid expression that resolves to a number to be divided. |
<divisor> |
Any valid expression that resolves to a nonzero number to divide by. |
Consider this sample document from the stores collection.
{
"_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
}
]
}
]
}
To calculate the average sales volume per employee, first run a query using the $divide operator to divide the total sales by the staff count. To calculate the percentage of full time staff, use the $divide operator to dive the number of full time staff by the total staff count and project the result as a percentage.
db.stores.aggregate([
{ $match: { "_id": "40d6f4d7-50cd-4929-9a07-0a7a133c2e74" } },
{
$project: {
name: 1,
averageSalesPerStaff: {
$divide: [
"$sales.totalSales",
{ $add: ["$staff.totalStaff.fullTime", "$staff.totalStaff.partTime"] }
]
},
fullTimeStaffPercentage: {
$multiply: [{
$divide: [
"$staff.totalStaff.fullTime",
{ $add: ["$staff.totalStaff.fullTime", "$staff.totalStaff.partTime"] }
]
}, 100]
}
}
}
])
This query returns the following result:
[
{
"_id": "40d6f4d7-50cd-4929-9a07-0a7a133c2e74",
"name": "Proseware, Inc. | Home Entertainment Hub - East Linwoodbury",
"averageSalesPerStaff": 3893.95,
"fullTimeStaffPercentage": 48.72
}
]
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