[大数据]Golang MongoDB Creat Index

"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/mongo/readpref"

database := client.Datbase("haha")

database.CreateCollection(context.TODO(),“hehe”")

mod2 := mongo.IndexModel{
   Keys: bson.D {
      {"name",1},{"age",1},
   }, Options: nil,
}

s, err  := coll.Indexes().CreateOne(context.TODO(),mod2)
if err != nil {
   fmt.Println("Indexes().CreateOne() ERROR:", err)  
} else {
   fmt.Println("CreateOne() index:", s) // 索引名字name_1_age_1
   fmt.Println("CreateOne() type:", reflect.TypeOf(ind), "\n")// 类型  string 
}