从Node.js连接到SQL Server

我正在使用Node js和SQL Server 2008开发示例应用程序。

要从节点js访问SQL Server，请使用seriate [ http://developer.leankit.com/painless-sql-server-with-nodejs-and-seriate/]。

下面是我的示例代码

文件./DBLayer/db.js代码

var sql = require("seriate");

var config = {
"server": "127.0.0.1",
"user": "sa",
"password": "12kafour~9999",
"database": "Tickets"
};

sql.setDefaultConfig( config );

exports.sqlDb = sql;

和文件app.js代码

var express = require('express');
var app = express();
var path = require('path');
var bodyParser = require('body-parser');
var sqlDb = require('./DBLayer/db.js');

//-- set the view engine
app.set('view engine' , 'ejs');

app.use( bodyParser.json() );       // to support JSON-encoded bodies

app.use(bodyParser.urlencoded({     // to support URL-encoded bodies ??
  extended: true
}));

//-- set the routes
app.get('/login' , function(req , res){
//-- set the view to render
res.render('login' , {title:'Login Screen' , error : ''});
});

app.post('/login' , function(req , res) {

 sqlDb.execute( {
      query: "SELECT count(*) FROM USERS WHERE LOGIN ='" + req.body.username   + "'" + "AND PASSWORD = '" + req.body.pwd + "'"
  } ).then( function( results ) {
      res.render('login' , {title:'Login Screen' , error : 'u r the one...'});
  }, function( err ) {
      res.render('login' , {title:'Login Screen' , error : 'Invalid Login/Password.'});
  });
});

 //-- set the port
 var server = app.listen(3000 , function() {
 console.log('Server Ready..')
 });

当用户输入用户名和密码并提交时，出现“ TypeError：sqlDb.execute不是函数”错误。

我不确定为什么会收到此错误。