Social Signup testing using Protractor & mysql - mysql

Question

I am trying to test the signup process for Social sites [google,Linkedin & Facebook] which will run concurrently using same MailId.In mysql DB,I run Queries inside the beforeLaunch:function() in CONFIG file.What is the other approach to tackle the ID=undefined issue when it executes DELETE query from DB?
Config.js file >
beforeLaunch:function(){
var ConnectDatabase = require('../dbconnections/ConnectDatabase.js');
var connectDatabase = new ConnectDatabase();
connectDatabase.connection.connect();
// checking id for created user
var sql = 'SELECT id FROM users where email='+ '\'quantra.learner#gmail.com\'';
var userID = connectDatabase.connection.query(sql,function(err, result){
if (err) {
console.log(err);
} else if (result[0].id == 'undefined' || result[0].id == 'null') {
console.log('This user is not available');
}else {
console.log('Find User ID by email : ' +result[0].id);
}
// deleting id for created user from 2 DB tables
var sql1 = 'DELETE FROM user_details WHERE user_id='+result[0].id;
var query1 = connectDatabase.connection.query(sql1,function(err, result1) {
if (err) console.log(err);
console.log('User_details Table : user_id '+ result[0].id + ' deleted!');
console.log('affectedRows: ' + result1.affectedRows);
var sql2 = 'DELETE FROM users WHERE id=' + result[0].id;
var query2 = connectDatabase.connection.query(sql2,function(err, result2) {
if (err) console.log(err);
console.log('Users Table : id ' + result[0].id + ' deleted!');
console.log('affectedRows: ' + result2.affectedRows);
});
});
});
},
Getting error > Cannot read property 'id' of undefined