Amazon Lambda で SimpleDB の Select 文を発行する

var aws = require('aws-sdk');
var sdb = new aws.SimpleDB({apiVersion: '2009-04-15', region: 'ap-northeast-1'});

exports.handler = function(event, context) {
   var params = {
        SelectExpression: "select * from hoge",
        ConsistentRead: false,
        NextToken: null
   };
   sdb.select(params, function(err, data) {

   });
};