Golang connect to MySQL

connect_mysql.go

package main

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

func main() {
	mysqlConn, err := sql.Open("mysql", os.Getenv("MYSQL_USER")+":"+os.Getenv("MYSQL_PASS")+"@("+os.Getenv("MYSQL_HOST")+")/"+os.Getenv("MYSQL_DB") + "?parseTime=true")
	if err != nil {
                log.Fatal(err)
        }       
}