go mysql怎么那么麻烦

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

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

func main() {
    db, err := sql.Open("mysql", "user:password@tcp(127.0.0.1:3306)/dbname")
    if err != nil {
        log.Fatal(err)
    }
    defer db.Close()
}

rows, err := db.Query("SELECT * FROM users WHERE id = ?", 1)
if err != nil {
    log.Println("Query error:", err)
    return
}
defer rows.Close()

package main

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

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

func main() {
    db, err := sql.Open("mysql", "user:password@tcp(127.0.0.1:3306)/dbname")
    if err != nil {
        log.Fatal(err)
    }
    defer db.Close()

    rows, err := db.Query("SELECT * FROM users")
    if err != nil {
        log.Fatal(err)
    }
    defer rows.Close()

    for rows.Next() {
        var id int
        var name string
        err = rows.Scan(&id, &name)
        if err != nil {
            log.Fatal(err)
        }
        fmt.Printf("ID: %d, Name: %s\n", id, name)
    }

    if err = rows.Err(); err != nil {
        log.Fatal(err)
    }
}