Insert one document Insert many documents Find all documents Find with equality filter Projection fields Nested document fields Array fields ObjectId values BSON date values Collection creation

$gt and $gte $lt and $lte $in operator $nin operator $ne operator $exists operator $type operator $regex operator $expr operator $mod operator

$and operator $or operator $nor operator $not operator $all array operator $elemMatch operator $size operator Dot notation for arrays Array index projection $slice projection

$set update $unset update $inc update $mul update $min and $max updates $rename update $push update $addToSet update $pull update Upsert

$match stage $project stage $group stage $sort stage $limit stage $skip stage $count stage $unwind stage $set stage $unset stage

$lookup join $facet stage $bucket stage $replaceRoot stage $mergeObjects expression $cond expression $switch expression $map expression $filter expression $reduce expression

Create ascending index Compound index Unique index Sparse index Partial index Text index TTL index Explain query plan Multi-document transaction Transaction retry pattern

Embedded data model Referenced data model Schema validation Capped collections Change streams Bulk write findOneAndUpdate Read concern Write concern Replica-set read preference