Ignore first 4 values in MongoDB documents and display the next 3?

To ignore the first 4 values in MongoDB documents and display the next 3, use the $slice operator with [skip, limit] array notation in the projection stage.

Syntax

db.collection.find(
    {},
    { arrayField: { $slice: [skipCount, limitCount] } }
);

Sample Data

db.demo693.insertMany([
    { Values: [10, 746, 736, 283, 7363, 424, 3535] },
    { Values: [100, 200, 300, 100, 500, 700, 900, 30000, 40003, 45999] }
]);

{
    "acknowledged": true,
    "insertedIds": [
        ObjectId("5ea58a04ece4e5779399c07b"),
        ObjectId("5ea58a1eece4e5779399c07c")
    ]
}

Display all documents to see the complete data ?

db.demo693.find();

{ "_id": ObjectId("5ea58a04ece4e5779399c07b"), "Values": [10, 746, 736, 283, 7363, 424, 3535] }
{ "_id": ObjectId("5ea58a1eece4e5779399c07c"), "Values": [100, 200, 300, 100, 500, 700, 900, 30000, 40003, 45999] }

Example: Skip First 4, Show Next 3

Use $slice: [4, 3] to skip the first 4 elements and return the next 3 ?

db.demo693.find(
    {},
    { Values: { $slice: [4, 3] } }
);

{ "_id": ObjectId("5ea58a04ece4e5779399c07b"), "Values": [7363, 424, 3535] }
{ "_id": ObjectId("5ea58a1eece4e5779399c07c"), "Values": [500, 700, 900] }

How It Works

• [4, 3] means skip 4 elements from the beginning, then return 3 elements
• First document: skips [10, 746, 736, 283], returns [7363, 424, 3535]
• Second document: skips [100, 200, 300, 100], returns [500, 700, 900]

Conclusion

The $slice operator with [skip, limit] notation efficiently extracts specific array segments. Use [4, 3] to skip the first 4 elements and display the next 3 in MongoDB documents.