'how to use golang mongodb driver query $or with $and?
1.judge field label_status is exists, if exists is true find one record.
2.if field label_status exist is false. find one record label_status eq 1 and author
eq sample
i use the code:
bson.D{
{"$or", bson.D{{"label_status", bson.D{{"$exists", false}}}}},
{"$and", bson.A{bson.M{"label_status": Labeling}, bson.M{"annotator": "sample"}}},
}
Solution 1:[1]
err := collection.FindOne(context.Background(), bson.D{
{"$or", bson.D{{"label_status", bson.D{{"$exists", false}}}}},
{"$and", bson.A{bson.M{"label_status": Labeling}, bson.M{"annotator": "sample"}}},
}).Decode(&result)
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Yu.jian |
