Database
[{"_id":"000016.XSHE_2020-01-02-09-32","order_book_id":"000016.XSHE","datetime":{"$date":"2020-01-02T09:32:00.000Z"},"num_trades":0,"low":4.3131,"close":4.3228,"high":4.3326,"total_turnover":2826041,"volume":639124,"open":4.3228},{"_id":"000016.XSHE_2020-01-02-09-33","order_book_id":"000016.XSHE","datetime":{"$date":"2020-01-02T09:33:00.000Z"},"num_trades":0,"low":4.3131,"close":4.3228,"high":4.3326,"total_turnover":1087488,"volume":246300,"open":4.3131}]
Query
db.collection.aggregate([{"$match":{"order_book_id":"000016.XSHE",}},{"$project":{"uplimit":{"$multiply":["$open",1.1]}}}])