Nested mysql query in each loop - mysql

Question

So all i want to do is to make a query to get all id's from the database and then i want to do my method for the id and update the row in the database.
So i created this code. But all it is doing is to get the ids and do not the nested query with the insertString1.
var mysql = require('mysql');
var _ = require("underscore");
var connection = mysql.createConnection({
host : 'myHost.net',
user : 'myUser',
password : 'myPassword',
database : 'myDatabase'
});
connection.query('SELECT * FROM `idmarkethash`', function (error, results) {
_.each(results, function (row) {
// here i want to calculate the new values of the row
// This insert query is just an example
var insertString1 = "UPDATE idmarkethash SET " +
"Price=" + mysql.escape(2.00) + ", " +
"Gradient=" + mysql.escape(2.00) + ", " +
"LastUpdated=" + mysql.escape("2015-08-31 00:00:11") + " " +
"WHERE Id=" + mysql.escape(181) + ";";
connection.query(insertString1, function (error1, result1) {
console.log(result1);
});
});
});
I tried the same with the async package:
var async = require('async');
// Packages are all included.
connection.query('SELECT * FROM `idmarkethash`', function (error, results) {
async.each(results, function (row, callback) {
// here i want to calculate the new values of the row
// This insert query is just an example
var insertString1 = "UPDATE idmarkethash SET " +
"Price=" + mysql.escape(2.00) + ", " +
"Gradient=" + mysql.escape(2.00) + ", " +
"LastUpdated=" + mysql.escape("2015-08-31 00:00:11") + " " +
"WHERE Id=" + mysql.escape(181) + ";";
connection.query(insertString1, function (error1, result1) {
console.log(result1);
callback();
});
});
});
With debugging i could see that the declaration of insertString1 is called, but the second query is not fired / or the loop continues without recognizing the second query.