Migrasi ke MongoDB:cara menanyakan GROUP BY + WHERE

Ada contohnya di seluruh dokumentasi, Google dan situs ini.

Beberapa referensi:

• http://api.mongodb.org/python/current/ contoh/agregasi.html
• http://docs.mongodb.org/manual/reference/aggregation /grup/
• http://docs.mongodb.org/manual/reference/aggregation /sum/

Dan untuk beberapa kode:

self.db.aggregate(
    # Lets find our records
    {"$match":{"Time":{"$gte":100,"$lte":1000}}}, 

    # Now lets group on the name counting how many grouped documents we have
    {"$group":{"_id":"$name", "sum":{"$sum":1}}} 
)