Как подключить mysql к golang?

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package main

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

func init() {
   sql.Register("mysql", &mysql.MySQLDriver{})
}

func main() {
   dsn := fmt.Sprintf("%s:%s@tcp(%s)/%s", "db_username", "db_password", "db_host", "database_name")
   // Открыть соединение с базой mysql
   db, err := sql.Open("mysql", dsn)
   if err != nil {
      panic(err)
   }

   defer db.Close()

   var username string

   stmt, err := db.Prepare("SELECT username FROM user WHERE id = ?")
   if err != nil {
      panic(err.Error())
   }

   defer stmt.Close()

   // WHERE id = 10
   err = stmt.QueryRow(10).Scan(&username)
   if err != nil {
      panic(err.Error())
   }

   fmt.Printf("Username для user where id = 10: %s", username)
}

1

go get -u github.com/go-sql-driver/mysql

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package main

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

func main() {
    db, err := sql.Open("mysql", "user:password@tcp(host:port)/database_name")
    if err != nil {
        panic(err.Error())
    }
    defer db.Close()

    err = db.Ping()
    if err != nil {
        panic(err.Error())
    }

    rows, err := db.Query("SELECT * FROM mytable")
    if err != nil {
        panic(err.Error())
    }
    defer rows.Close()

    for rows.Next() {
        var id int
        var name string
        err := rows.Scan(&id, &name)
        if err != nil {
            panic(err.Error())
        }
        fmt.Println(id, name)
    }
}