package main

import (
	"database/sql"
	_ "DBAndProtobuf_Gotest/github.com/go-sql-driver/mysql"
	"fmt"
)
var(
	dbhostsip = "127.0.0.1:3306"  //IP地址
	dbusername = "root"  //数据库的用户名
	dbpassword = "123456"  //登录数据库的密码
	dbname = "userif"  //数据库表名
)

func main() {

	db,err := sql.Open("mysql","root:123456@tcp(127.0.0.1:3306)/dbtest?charset=utf8")  //dbtest为我新建立的数据库名
	checkErr(err)


	//插入数据
	stmt,err := db.Prepare("INSERT userif SET userid=?,username=?,departname=?,created=?")
	checkErr(err)

	res,err := stmt.Exec(20180670,"lianlian","Resotry","2018-06-20")
	checkErr(err)

	id,err := res.LastInsertId()
	checkErr(err)

	fmt.Println(id)

	//更新数据
	stmt,err = db.Prepare("UPDATE userif SET username=? where userid=?")
	checkErr(err)

	res,err = stmt.Exec("happy",20180620)
	checkErr(err)

	affect,err := res.RowsAffected()
	checkErr(err)

	fmt.Println(affect)

	//查询数据
	rows,err := db.Query("SELECT * FROM userif")
	checkErr(err)

	for rows.Next(){
		var userid int
		var username string
		var departname string
		var created string
		err = rows.Scan(&userid,&username,&departname,&created)
		checkErr(err)
		fmt.Println(userid)
		fmt.Println(username)
		fmt.Println(departname)
		fmt.Println(created)
	}

	//删除数据
	stmt,err = db.Prepare("DELETE from userif where userid=?")
	checkErr(err)

	res,err = stmt.Exec(20180651)
	checkErr(err)

	affect,err = res.RowsAffected()
	checkErr(err)

	fmt.Println(affect)

	//关闭数据库
	db.Close()
}

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