connecting to MySQL async using nodeJs and 'Q' - mysql

Question

I'm dealing with project using Postgres DB, it uses nodeJs and 'Q' framework. I want to replace postgres DB with mysql database, since I'm a total newbie to nodeJs, I have no idea on how to idea? It will be great if you could share an example of mysql connect and if possible a simple query using nodeJs and 'Q'.

Answer 1

Take a look at this answer. It seems to answer your question.
Taken exactly from the the answer:
var mysql = require('mysql');
var Q = require('Q');
var connection = mysql.createConnection({
host : 'localhost',
user : 'root',
password : ''
});
connection.connect();
function doQuery1(){
var defered = Q.defer();
connection.query('SELECT 1 AS solution',defered.makeNodeResolver());
return defered.promise;
}
function doQuery2(){
var defered = Q.defer();
connection.query('SELECT 2 AS solution',defered.makeNodeResolver());
return defered.promise;
}
Q.all([doQuery1(),doQuery2()]).then(function(results){
res.send(JSON.stringify(results[0][0][0].solution+results[1][0][0].solution));
});
connection.end();
However, if you don't need to make multiple calls at once, you can skip the use of Q.all and just do something like:
return doQuery1().then(function(res){
console.log(res);
connection.end();
});

Answer 2

Thanks, this is how i ended up doing it in the end:
var connection = mysql.createConnection({host : 'host',user :'user', password : 'pass', database : 'db'});
var connect = Q.denodeify(connection.connect.bind(connection));
connect().then(function (values) {
console.log('...connected to database');
var query = Q.denodeify(connection.query.bind(connection));
})