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I am getting an error while connecting to mysql database

I am trying to input some data into a mysql database, but I can't connect to it.
My code:
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "yourusername",
password: "yourpassword"
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
});
I have also installed mysql into my system by using npm install mysql in cmd. Whenever I try to execute the above code, I get this error:
C:\Users\Abhishek\Desktop\Data scraping\scraping.js:60
if (err) throw err;
^
Error: connect ECONNREFUSED 127.0.0.1:3306
at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1129:16)
--------------------
at Protocol._enqueue (C:\Users\Abhishek\node_modules\mysql\lib\protocol\Protocol.js:144:48)
at Protocol.handshake (C:\Users\Abhishek\node_modules\mysql\lib\protocol\Protocol.js:51:23)
at Connection.connect (C:\Users\Abhishek\node_modules\mysql\lib\Connection.js:116:18)
at Object.<anonymous> (C:\Users\Abhishek\Desktop\Data scraping\scraping.js:59:5)
at Module._compile (node:internal/modules/cjs/loader:1083:30)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1112:10)
at Module.load (node:internal/modules/cjs/loader:948:32)
at Function.Module._load (node:internal/modules/cjs/loader:789:14)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:72:12)
at node:internal/main/run_main_module:17:47 {
errno: -4078,
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 3306,
fatal: true
}
How do I fix this?

how to connect to MySQL(phphmyadmin) from Node.js?

When installing a fresh version of xampp I'm able to connect my js script to MySQL through the terminal.
const mysql = require('mysql');
let con = mysql.createConnection({
host: "localhost",
user: "root",
password: "",
port:3307
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
});
PS C:\login> node connection.js
Connected!
I've been trying another db which I have credentials for but it seems to be a problem when you have a password property in the con object. That it will not connect with a password :P What Im I doing wrong here?
C:\login\connection.js:13
if (err) throw err;
^
Error: connect ECONNREFUSED 127.0.0.1:3306
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1134:16)
--------------------
at Protocol._enqueue (C:\login\node_modules\mysql\lib\protocol\Protocol.js:144:48)
at Protocol.handshake (C:\login\node_modules\mysql\lib\protocol\Protocol.js:51:23)
at Connection.connect (C:\login\node_modules\mysql\lib\Connection.js:116:18)
at Object.<anonymous> (C:\login\connection.js:12:7)
at Module._compile (internal/modules/cjs/loader.js:955:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:991:10)
at Module.load (internal/modules/cjs/loader.js:811:32)
at Function.Module._load (internal/modules/cjs/loader.js:723:14)
at Function.Module.runMain (internal/modules/cjs/loader.js:1043:10)
at internal/main/run_main_module.js:17:11 {
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 3306,
fatal: true
}

var mysql = require("mysql");
var con = mysql.createConnection({
host: "localhost",
user: "root",
password: "",
database:"xyz"
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
});
PS C:\login> node connection.js
Connected!

Is there a good way to surface error traces in production across event emitters / event loop boundaries?

Let's say I have:
const req = require('net').createConnection(80, 'localhost');
req.on('error', (error) => {
console.error(error) // handle somehow
});
If error event occurs, I get
{ Error: connect ECONNREFUSED 127.0.0.1:80
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1117:14)
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 80 }
In the terminal.
I'd like instead to see the full stack:
{ Error: connect ECONNREFUSED 127.0.0.1:80
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1117:14)
at Object.<anonymous> (/Users/aleksey/error-handing-example.js:2:7)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:743:3)
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED',
syscall: 'connect',
address: '127.0.0.1',
port: 80 }
Note: I obtained the full trace artificially like this:
Error.captureStackTrace(this);
const req = require('net').createConnection(80, 'localhost');
req.on('error', (error) => {
error.stack += this.stack.replace(/^.+$/, '');
console.error(error) // handle somehow
});
I can't be doing this for all errors, as it's not sustainable
Is there a way to do this:
a. In a way that doesn't hurt production stability (longjohn claims that it's for development only)?
b. Automatically?

Here's a hacky thing I cooked up using async_hooks and overriding Error.captureStackTrace:
const ah = require('async_hooks');
const traces = new Map();
ah.createHook({
init(id) {
const _trace = {};
Error.captureStackTrace(_trace);
traces.set(id, _trace.stack.replace(/(^.+$\n){4}/m, '\n'));
},
destroy(id) {
traces.delete(id);
},
}).enable();
global.Error = class extends Error {
constructor(message) {
super(message);
this.constructor.captureStackTrace(this, this.constructor);
}
static captureStackTrace(what, where) {
super.captureStackTrace.call(Error, what, where);
const trace = traces.get(ah.executionAsyncId());
if (trace) what.stack += trace;
}
};
The gist is:
Keep a map of asyncId => traces
Override Error.captureStackTrace to use the trace from that asyncId on top of the original stack
Not sure about its performance limitations, bugginess, and robustness, but that's all I could come up with .
Now if I have:
const req = net.createConnection(8080);
req.once('error', err => {
console.error(err);
});
instead of
{ Error: connect ECONNREFUSED 127.0.0.1:8080
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1084:14)
I get
{ Error: connect ECONNREFUSED 127.0.0.1:8080
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1084:14)
at TCPConnectWrap.emitInitNative (internal/async_hooks.js:137:43)
at internalConnect (net.js:840:26)
at defaultTriggerAsyncIdScope (internal/async_hooks.js:294:19)
at GetAddrInfoReqWrap.emitLookup [as callback] (net.js:1006:9)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:62:10)
at GetAddrInfoReqWrap.emitInitNative (internal/async_hooks.js:137:43)
at lookup (dns.js:142:19)
at net.js:981:5
at defaultTriggerAsyncIdScope (internal/async_hooks.js:294:19)
at lookupAndConnect (net.js:980:3)
at Socket.connect (net.js:915:5)
at Object.connect (net.js:162:17)
at Object.<anonymous> (/Users/aleksey/epudos-lite/server/test.js:28:17)

MySql - not connecting in nodejs

im trying to set it up so my twitch bot can connect to a database to store data. however i cannot seem to work out how to connect. Ive inputted all the correct data (i can connect with the credetials with a client) and it still isnt connecting.
var sql = require('mssql');
var sqlConfig = {
server: "x",
username: "x",
password: "x",
database: "x"
};
(async function () {
try {
console.log("sql connecting......")
let pool = await sql.connect(sqlConfig)
let result = await pool.request()
.query('select * from Subject') // subject is my database table name
console.log(result )
} catch (err) {
console.log(err);
}
})()
that errors this :
{ ConnectionError: Failed to connect to sql2.freemysqlhosting.net:1433 in 15000ms
at Connection.tedious.once.err (H:\Node JS\TwitchBot\node_modules\mssql\lib\tedious.js:216:17)
at Object.onceWrapper (events.js:315:30)
at emitOne (events.js:116:13)
at Connection.emit (events.js:211:7)
at Connection.connectTimeout (H:\Node JS\TwitchBot\node_modules\tedious\lib\connection.js:924:12)
at ontimeout (timers.js:498:11)
at tryOnTimeout (timers.js:323:5)
at Timer.listOnTimeout (timers.js:290:5)
code: 'ETIMEOUT',
originalError:
{ ConnectionError: Failed to connect to sql2.freemysqlhosting.net:1433 in 15000ms
at ConnectionError (H:\Node JS\TwitchBot\node_modules\tedious\lib\errors.js:12:12)
at Connection.connectTimeout (H:\Node JS\TwitchBot\node_modules\tedious\lib\connection.js:924:28)
at ontimeout (timers.js:498:11)
at tryOnTimeout (timers.js:323:5)
at Timer.listOnTimeout (timers.js:290:5)
message: 'Failed to connect to sql2.freemysqlhosting.net:1433 in 15000ms',
code: 'ETIMEOUT' },
name: 'ConnectionError' }
OUTCOME 1 this didnt work because it was not mysql is mssql. Im a bit stupid sorry guys:
throw new RangeError('Index out of range');
RangeError: Index out of range
at checkOffset (buffer.js:977:11)
at Buffer.readUInt8 (buffer.js:1015:5)
at Packet.isLast (H:\Node JS\TwitchBot\node_modules\tedious\lib\packet.js:116:29)
at ReadablePacketStream.<anonymous> (H:\Node JS\TwitchBot\node_modules\tedious\lib\message-io.js:101:18)
at emitOne (events.js:116:13)
at ReadablePacketStream.emit (events.js:211:7)
at addChunk (H:\Node JS\TwitchBot\node_modules\tedious\node_modules\readable-stream\lib\_stream_readable.js:291:12)
at readableAddChunk (H:\Node JS\TwitchBot\node_modules\tedious\node_modules\readable-stream\lib\_stream_readable.js:278:11)
at ReadablePacketStream.Readable.push (H:\Node JS\TwitchBot\node_modules\tedious\node_modules\readable-stream\lib\_stream_readable.js:245:10)
at ReadablePacketStream.Transform.push (H:\Node JS\TwitchBot\node_modules\tedious\node_modules\readable-stream\lib\_stream_transform.js:148:32)
OUTPUT 2 :
Error: connect ECONNREFUSED 127.0.0.1:3306
at Object._errnoException (util.js:992:11)
at _exceptionWithHostPort (util.js:1014:20)
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1186:14)
--------------------
at Protocol._enqueue (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\Protocol.js:145:48)
at Protocol.handshake (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\Protocol.js:52:23)
at Connection.connect (H:\Node JS\TwitchBot\node_modules\mysql\lib\Connection.js:130:18)
at Object.<anonymous> (H:\Node JS\TwitchBot\fb.js:11:12)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Function.Module.runMain (module.js:693:10)
OUTPUT 3:
Error: ER_ACCESS_DENIED_ERROR: Access denied for user ''#'MY isp identifier' (using password: YES)
at Handshake.Sequence._packetToError (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\sequences\Sequence.js:52:14)
at Handshake.ErrorPacket (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\sequences\Handshake.js:130:18)
at Protocol._parsePacket (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\Protocol.js:279:23)
at Parser.write (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\Parser.js:76:12)
at Protocol.write (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\Protocol.js:39:16)
at Socket.<anonymous> (H:\Node JS\TwitchBot\node_modules\mysql\lib\Connection.js:103:28)
at emitOne (events.js:116:13)
at Socket.emit (events.js:211:7)
at addChunk (_stream_readable.js:263:12)
at readableAddChunk (_stream_readable.js:250:11)
--------------------
at Protocol._enqueue (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\Protocol.js:145:48)
at Protocol.handshake (H:\Node JS\TwitchBot\node_modules\mysql\lib\protocol\Protocol.js:52:23)
at Connection.connect (H:\Node JS\TwitchBot\node_modules\mysql\lib\Connection.js:130:18)
at Object.<anonymous> (H:\Node JS\TwitchBot\fb.js:11:12)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Function.Module.runMain (module.js:693:10)

You're using the mssql npm library to connect to a mysql database. These are two completely different DBMS systems and as such, are not cross compatible. You need to use the correct kind of client.
I know you're trying to connect to a mysql db because in the URL I can see https://www.freemysqlhosting.net/ which only supports hosting of a `mysql database. This means you need to use the correct kind of client.
To do this, you can use the mysql npm dependency, with a code block like this:
var mysql = require('mysql');
var connection = mysql.createConnection({
host : 'x',
user : 'x',
password : 'x',
database : 'x'
});
connection.connect();
connection.query('SELECT 1 + 1 AS solution', function (error, results, fields) {
if (error) throw error;
console.log('The solution is: ', results[0].solution);
});
connection.end();
This will open a connection using the appropriate protocol and allow you to access your database.
Extra Reading
I'd read about the concept of a DBMS to fill up your understanding of why this code block hasn't worked.

Problem fixed by:
if you are using mssql according to npmjs.com/package/mssql you should replace host by server on sqlConfig object. (host is for mysql, server is for mssql)
set port on sqlConfig object:
var sqlConfig = {
server: "x",
username: "x",
password: "x",
database: "x",
port: "x"
};

error while creating database using node js

I am new to node js and i am trying to create a database.
i copied code from w3school and tried to run in my pc.
i got the following error:
C:\Users\HP\Desktop>node db.js
C:\Users\HP\Desktop\db.js:10
if (err) throw err;
^
Error: connect ECONNREFUSED 127.0.0.1:3306
at Object._errnoException (util.js:999:13)
at _exceptionWithHostPort (util.js:1020:20)
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1207:14)
--------------------
at Protocol._enqueue (C:\Users\HP\node_modules\mysql\lib\protocol\Protocol.j
s:145:48)
at Protocol.handshake (C:\Users\HP\node_modules\mysql\lib\protocol\Protocol.
js:52:23)
at Connection.connect (C:\Users\HP\node_modules\mysql\lib\Connection.js:130:
18)
at Object.<anonymous> (C:\Users\HP\Desktop\db.js:9:5)
at Module._compile (module.js:660:30)
at Object.Module._extensions..js (module.js:671:10)
at Module.load (module.js:573:32)
at tryModuleLoad (module.js:513:12)
at Function.Module._load (module.js:505:3)
at Function.Module.runMain (module.js:701:10)
C:\Users\HP\Desktop>
db.js:
var mysql = require('mysql');
var con = mysql.createConnection({
host: "localhost",
user: "myusername",
password: "mypassword"
});
con.connect(function(err) {
if (err) throw err;
console.log("Connected!");
/*Create a database named "mydb":*/
con.query("CREATE DATABASE mydb", function (err, result) {
if (err) throw err;
console.log("Database created");
});
});
I am completely new to node js.