使用node js 操作 Mysql 数据库

使用node js 操作 Mysql 数据库

http://www.nodejs.org/

//node js 数据库操作 MySQL
//使用https://github.com/felixge/node-mysql
//sql 操作 http://www.w3school.com.cn/sql/
//http://see.xidian.edu.cn/cpp/html/1441.html


/**
    建立数据库连接
*/
var mysql      = require('mysql');
var connection = mysql.createConnection({
  host     : 'localhost',
  user     : 'root',
  password : 'root',
  database : 'jkkDB'    //在下面创建数据库之后，添加此字段，连接对应的库
});

connection.connect();


//测试数据库连接
connection.query('SELECT 1 + 1 AS solution', function(err, rows, fields) {
  if (err) throw err;

  console.log('The solution is: ', rows[0].solution); //2 表示连接成功
});


/*
//建立 数据库 jkkDB
var createDataBase = 'CREATE DATABASE jkkDB';
connection.query(createDataBase, function (err0, res0) {
    
      if (err0) console.log(err0);
    console.log("create DataBase ==> ");
    console.log(res0);

    
});

*/



/*
//创建表
var createTable = 'CREATE TABLE jkkTable(name char,age int)';
 
connection.query(createTable, function (err0, res0) {
    
      if (err0) console.log(err0);
    console.log("create Table ==> ");
    console.log(res0);

    
});

*/





/*
//插入一条数据

var insertSql = "insert into jkkTable values('JKK',24),('zyk',18), ('YK',8);";

connection.query(insertSql, function (err0, res0) {
    
      if (err0) console.log(err0);
    console.log("insert row ==> ");
    console.log(res0);

    
});

*/


/**
    //更新表数据

*/

var updateSql = "update jkkTable set age=20 where name='J';";
connection.query(updateSql, function (err0, res0) {
    
      if (err0) console.log(err0);
    console.log("update row ==> ");
    console.log(res0);

    
});





//查询
var selectStr = 'select * from jkkTable';
connection.query(selectStr, function (err0, rows) {
    
      if (err0) console.log(err0);
    console.log("select row ==> ");
    console.log(rows);
    
    for (var i in rows) {
         console.log(rows[i]);
     }

    
});





//关闭数据库连接；
connection.end();