mongodbHow to query with "not in" condition in MongoDB?

MongoDB provides the $nin operator to query documents with a "not in" condition. The $nin operator is used to specify a query condition to select documents that do not match the specified values.

Example

db.collection.find({
  field: {
    $nin: [value1, value2, ...]
  }
})

This example will return all documents in the collection where the value of the field is not equal to any of the specified values.

Parts of the code:

• db.collection.find(): This is the MongoDB query method used to find documents in a collection.
• field: This is the name of the field in the document that is being queried.
• $nin: This is the MongoDB operator used to specify a "not in" condition.
• [value1, value2, ...]: This is an array of values that the field must not match.

Helpful links

• MongoDB Query Operators

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