Node JS MySQL - Inserting Data.. No Rows updates in Database - mysql

Question

I am trying to Insert Data in Database through Node JS. Code working good showing "Record Inserted" msgs but no rows getting updated in MySQL.
This is the code where i am performing insert operation
connection.query('SELECT * FROM menu WHERE item_name=\'' + userResponces[2].toLowerCase() + '\'', function(err, rows){
if (err) throw err;
else{
i_id = rows[0].item_id;
console.log('i_id ' + i_id);
connection.query('INSERT INTO customer VALUES(default,' + c_name + ',' + c_addr + ',' + c_mob + ')', function(err, res){
if(err.fatal){
console.log(''+err.message);
}
else{
console.log("Record Inserted");
connection.query('SELECT MAX(customer_id) AS c_id FROM customer', function(err, res){
if(err) throw err;
else{
c_id = parseInt(res[0].c_id) + 1;
console.log('c_id ' + c_id);
console.log(i_id + ' ' + c_id + ' ' + qty);
connection.query('INSERT INTO order1() VALUES(default,' + i_id + ',' + c_id + ',' + qty + ',1)', function(err, res){
if(err) throw err;
else
console.log("Record Inserted");
});
}
});
}
});
}
});
In above code SELECT statement working perfectly, so undoubtedly no error in connection. Still this is for connection.
var mysql = require('mysql');
var connection = mysql.createConnection({
host : 'localhost',
user : 'nodeuser',
password : 'password',
database : 'foodorder'
});
connection.connect(function(err){
if(!err) {
console.log("Database is connected ...");
} else {
console.log("Error connecting database ...");
}
});

Answer 1

You first condition tests err.fatal.
But if the query returns a SQL error like ER_NO_SUCH_TABLE, err object hasn't a fatal property.
{ [Error: ER_NO_SUCH_TABLE: Table 'bad_table_name' doesn't exist]
code: 'ER_NO_SUCH_TABLE',
errno: 1146,
sqlState: '42S02',
index: 0 }
So, here, you should test on err rather than err.fatal
connection.query('INSERT INTO customer VALUES(default,' + c_name + ',' + c_addr + ',' + c_mob + ')', function(err, res){
if (err){
return console.log(err);
}
else{
console.log("Record Inserted");
// ...
});
Btw, think about escaping values :
connection.query(
'INSERT INTO customer VALUES(default, ?, ?, ?)',
[c_name, c_addr, c_mob],
function(err, res) {
//...
}
);