Dae*_*313 8 go mongodb aggregation-framework
有谁知道我们在mongodb shell中为golang mgo/bson使用的聚合命令的等价物是什么?
像这样的东西:
aggregate([{$match:{my_id:ObjectId("543d171c5b2c1242fe0019")}},{$sort:{my_id:1, dateInfo:1, name:1}},{$group:{_id:"$my_id", lastEntry:{$max: "$dateInfo"},nm:{$last:"$name"}}}])
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Jar*_*ema 25
假设这c是你的收藏:
pipe := c.Pipe([]bson.M{{"$match": bson.M{"name":"John"}}})
resp := []bson.M{}
err := pipe.All(&resp)
if err != nil {
//handle error
}
fmt.Println(resp) // simple print proving it's working
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GoDoc参考: