MongoDB isn’t just a NoSQL database—it’s a data powerhouse. With its aggregation framework, you can filter, transform, group, and join data like a pro. Here's a lightning-fast rundown of the top 10 aggregate operators you need to know:
$match – Filter documents (like .find() on steroids) $group – Group by fields and perform sum/count/avg $project – Reshape documents or add computed fields $sort – Order by fields $limit – Get top N results $skip – Skip N documents $unwind – Explode array fields into individual documents $lookup – Perform joins across collections $count – Count matching documents $out – Write results to a new collection