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A text index enables full-text search capabilities.

$not negates a query condition in MongoDB.

skip() skips a specified number of documents in the result set.

geoNear() performs a geospatial query in MongoDB.

$pull removes elements from an array that match a condition.

The sort() method sorts the results of a query.

$push adds an element to an array field in a document.

db.stats() displays collection statistics.

$elemMatch matches documents where an array field contains a matching element.

The limit() method restricts the number of documents returned.

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