ktvmanager/routes/postUser.js

var express = require('express');
var router = express.Router();

const sql = require('../lib/mysql')
/* POST postUser page. */
router.post('/', async function (req, res, next) {
    sql.query(`SELECT * FROM users WHERE username = '${req.body.username}'`, function (err, tt) {
        if (err) {
            console.log("User Not Found: ", err);
            result(err, null);
        }
        else {
            console.log(tt[0]);
            res.send(tt[0]);
        }
    });
});

module.exports = router;