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$nor

The `$nor` operator performs a logical NOR operation on an array of expressions and selects documents that fail all the specified expressions.

Syntax

{
    $nor: [{
        <expression1>
    }, {
        <expression2>
    }, ..., {
        <expressionN>
    }]
}

Parameters

expressionobjectrequired

An array of expressions, all of which must be false for a document to be included

Examples

Find stores failing all conditions

To find stores that neither have more than 15 full-time staff nor more than 20 part-time staff, run a query with the $nor operator.

Query:

db.stores.find({
    $nor: [{ "staff.totalStaff.fullTime": { $gt: 15 } }, { "staff.totalStaff.partTime": { $gt: 20 } }]
}, { "name": 1, "staff": 1 })

Output:

[
    { "_id": "a715ab0f-4c6e-4e9d-a812-f2fab11ce0b6", "name": "Lakeshore Retail | Holiday Supply Hub - Marvinfort", "staff": { "totalStaff": { "fullTime": 9, "partTime": 18 } } },
    { "_id": "923d2228-6a28-4856-ac9d-77c39eaf1800", "name": "Lakeshore Retail | Home Decor Hub - Franciscoton", "staff": { "totalStaff": { "fullTime": 7, "partTime": 6 } } }
]

Exclude multiple criteria

To find stores without sales over $100,000, without Digital Watches sales, or without September 2024 promotions.

Query:

db.stores.find({
    $nor: [
      { "sales.totalSales": { $gt: 100000 } },
      { "sales.salesByCategory.categoryName": "Digital Watches" },
      { "promotionEvents": { $elemMatch: { "promotionalDates.startDate.Month": 9, "promotionalDates.startDate.Year": 2024 } } }
    ]
}, { "name": 1, "sales": 1, "promotionEvents": 1 })

Output:

[
    { "_id": "7954bd5c-9ac2-4c10-bb7a-2b79bd0963c5", "name": "Lakeshore Retail | DJ Equipment Stop - Port Cecile" }
]

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