Node.js mysql INSERT query is inserting multiple values into table

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node.js MySQL package is inserting multiple values into table when it should only be inserting one.

I’m using node.js MySQL package to INSERT values with JavaScript. Every time I run the query, multiple values are inserted into the table, as if the query was ran multiple times. I believe maybe it has to do with asynchronous nature of JavaScript and promises.

  
import { getData} from 'backend/MySQL_DB_Connection';

$w.onReady(function () {

    getData()
        .then(function (results) {
            console.log(results);
 //$w("#html1").postMessage(results);
        })
        .catch(function (err) {
            console.log("Promise rejection error: " + err);
        })
});

export function getData() {
    return new Promise(function (resolve, reject) {
    var mysql = require('mysql');
    var connection = mysql.createConnection({
        host: 'ec2-xxxxxxxxe-1.amazonaws.com',
        user: 'xxxxx',
        password: 'xxxxx',
        database: 'xxxxoli_webform'
    });

    connection.connect(function (err) {

        var sql = "INSERT INTO webform (Name) VALUES ('test1')";
        connection.query(sql, function (err, result1) {
        if (result1 === undefined) {
                reject(new Error("Error result is undefined"));
            } else {
                resolve(result1)
            }
        });

        connection.end();
    });
});
2

To get a better understanding of how Promises work, refer to the following articles:
Promises, Promises
Working with Promises in Wix Code

If it isn’t because of improper Promises handling, you should check with the provider of the library. Although NPM libraries are available, they are not part of the Wix Code product (which is what this forum is about).