Go sql从扫描返回多行

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

func main() {
    // 连接数据库
    db, err := sql.Open("mysql", "user:password@tcp(localhost:3306)/database")
    if err != nil {
        panic(err.Error())
    }
    defer db.Close()

    // 执行查询语句
    rows, err := db.Query("SELECT * FROM users")
    if err != nil {
        panic(err.Error())
    }
    defer rows.Close()

    // 遍历结果集
    for rows.Next() {
        var id int
        var name string
        var age int
        err = rows.Scan(&id, &name, &age)
        if err != nil {
            panic(err.Error())
        }
        fmt.Println(id, name, age)
    }

    // 检查遍历过程中是否出错
    err = rows.Err()
    if err != nil {
        panic(err.Error())
    }
}