I find the MongoDB API is abusing JSON in a really bad way. JSON is probably a good format for storing the documents in MongoDB, but using JSON for it’s weird API is simply a terrible idea. Here’s an example from the SQL to Aggregation Framework Mapping Chart db.orders.aggregate( [ { $group: { _id: { cust_id: "$cust_id", ord_date: "$ord_date" }, total: { $sum: "$price" } } }, { $match: { total: {
