Exceeded memory limit for $group, but didn't allow external sort. Pass allowDiskUse:true to opt in

query_data_total = coll.aggregate([ {"$match": {"order_date": {"$gte": start_date, "$lte": end_date}, }}, {"$group": {"_id": "$order_date", "gmv": {"$sum": "$price"}, "ticket_num": {"$sum": 1}, "order_num": {"$addToSet": "$order_id"}} } ]) 使用aggregate聚合查询 但查询几天的数据的时候没有问题 当天数多了之后就报错 用的是pymongo