Get All MySQL Rows in Go

package main

import (
	"database/sql"
	"fmt"
	"log"
	"time"

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

func main() {
	db, err := sql.Open("mysql", "root:root@(127.0.0.1:3306)/root?parseTime=true")
	if err != nil {
		log.Fatal(err)
	}

	type user struct {
		id        int
		username  string
		password  string
		createdAt time.Time
	}

	rows, err := db.Query(`SELECT id, username, password, created_at FROM users`)
	if err != nil {
		log.Fatal(err)
	}
	defer rows.Close()

	var users []user
	for rows.Next() {
		var u user

		err := rows.Scan(&u.id, &u.username, &u.password, &u.createdAt)
		if err != nil {
			log.Fatal(err)
		}
		users = append(users, u)
	}
	if err := rows.Err(); err != nil {
		log.Fatal(err)
	}

	fmt.Printf("%#v", users)
}