go语言学习----mysql的操作

package main

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

func main() {

    db, err := sql.Open("mysql", "chenxun:123456@tcp(202.120.1.1:330)/ppserver?charset=utf8")
    if err != nil {
        log.Fatalf("Open database error: %s\n", err)
    }
    defer db.Close()

    rows, err := db.Query("SELECT userId, nickName FROM userInfo where userId = 1")
    if err != nil {
        log.Println(err)
    }
    defer rows.Close()

    var userId int
    var nickName string

    for rows.Next() {
        err := rows.Scan(&userId, &nickName)
        if err != nil {
            log.Fatal(err)
        }
        log.Println(userId, nickName)
    }

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

}

func checkErr(err error) {
    if err != nil {
        panic(err)
    }
}