MongoDB in Go (golang) with mgo: how to use logical operators to query?

Question

I would like to run the following query in golang using mgo in a pipeline.

{\"key1\" : 1,
 \"$or\" : [{\"key2\" : 2}, {\"key3\" : 2}]}

I have l

Answer 1

go lang Mongo db Or query

findQuery := bson.M{"key1" : 1}
orQuery := []bson.M{}
orQuery := append(orQuery, bson.M{"key2" : 2}, bson.M{"key3" : 2})

findquery["$or"] = orQuery
result := []interface{}
err := mongo.DB.C("collectionName").find(findQuery).All(&result)

Answer 2

Your mongo query can be translated to the following:

pipeline := bson.D{
    {"key1", 1},
    {"$or", []interface{}{
        bson.D{{"key2", 2}},
        bson.D{{"key3", 2}},
    }},
}

The query should be equivalent to the following in the mongo console:

db.mycollection.find({"key1" : 1, "$or" : [{"key2" : 2}, {"key3" : 2}]})

If you'd rather wish to use unordered maps, bson.M, it would be like this:

pipeline := bson.M{
    "key1": 1,
    "$or": []interface{}{
        bson.M{"key2": 2},
        bson.M{"key3": 2},
    },
}