go语言连接mysql 实现增删改查

package main

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


func main(){
	db, err := sql.Open("mysql", "root:123456@tcp(127.0.0.1:3306)/go?charset=utf8")
	if err != nil {
		fmt.Println(err)
		return
	}
	defer db.Close()
	update(db)
	sqlselect(db)

	insert(db)
	fmt.Println("插入后")
	sqlselect(db)

	delete(db);
	fmt.Println("删除后")
	sqlselect(db)
}

// 查询 数据
func sqlselect(db *sql.DB)  {
	rows,err := db.Query("select * from test")
	if err != nil {
		fmt.Println("数据库查询出错执行出错")
	}
	for rows.Next(){
		//按表名的顺序读取参数
		err := rows.Scan(&Name,&Id)
		if err != nil {
			log.Fatal(err)
		}
		fmt.Println(Name, Id)
	}
	rows.Close()
}

//更新
func update(db *sql.DB)  {
	result,err:=db.Exec("update test set Id = 1123 WHERE test.Name=?","a")
	if err != nil {
		fmt.Println("数据库执行更新出错")
	}
	changelow,err:=result.RowsAffected()
	if err != nil {
	}
	fmt.Println("共计",changelow,"行受到影响")
}
//INSERT INTO `go`.`test` (`Id`, `Name`) VALUES ('4', 'd');
//插入
func insert(db *sql.DB){
	result,err:=db.Exec("INSERT test (Id, Name) VALUES (?,?)","5","e")
	if err != nil {
		fmt.Println("数据库执行插入出错",err)
		return
	}
	changelow,err:=result.RowsAffected()
	if err != nil {

	}
	fmt.Println("共计",changelow,"行受到影响")
}

//DELETE FROM `go`.`test` WHERE `Id` = '5';
//删除第5条数据
func delete(db *sql.DB){
	result,err:=db.Exec("DELETE FROM test WHERE `Id` = ?",5)
	if err != nil {
		fmt.Println("数据库执行删除出错",err)
		return
	}
	changelow,err := result.RowsAffected()
	if err != nil {

	}
	fmt.Println("共计",changelow,"行受到影响")
}

CREATE TABLE `test` (
  `Id` int(11) NOT NULL,
  `Name` char(200) DEFAULT NULL,
  PRIMARY KEY (`Id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

user@unix(/path/to/socket)/dbname

root:pw@unix(/tmp/mysql.sock)/myDatabase?loc=Local

user:password@tcp(localhost:5555)/dbname?tls=skip-verify&autocommit=true