Connect to MySQL Database in Golang

package main

import (
	"database/sql"
	"fmt"
	_ "github.com/go-sql-driver/mysql"
)

func connectDB() (db *sql.DB, err error) {
	dbDriver := "mysql"
	dbUser := "root"
	dbPass := "123456"
	dbName := "nilpointer"
	db, err = sql.Open(dbDriver, dbUser+":"+dbPass+"@/"+dbName)
	return
}

func main() {
	_, err := connectDB()
	if err != nil {
		fmt.Println(err)
	} else {
		fmt.Println("Success")
	}
}

Output

Success