squelize issues when running express.js app - mysql

Question

I'm trying to run a simple application with Express, Sequelize, and MySQL
I get this error:
Executing (default): CREATE TABLE IF NOT EXISTS `tasks` (`id` INTEGER NOT NULL auto_increment , `title` VARCHAR(255) NOT NULL, `description` VARCHAR(255) NOT NULL, `status` NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` DATETIME NOT NULL, PRIMARY KEY (`id`)) ENGINE=InnoDB;
err: Error
at Query.run (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\sequelize\lib\dialects\mysql\query.js:52:25)
at C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\sequelize\lib\sequelize.js:313:28
at processTicksAndRejections (internal/process/task_queues.js:95:5)
at async MySQLQueryInterface.createTable (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\sequelize\lib\dialects\abstract\query-interface.js:94:12)
at async Function.sync (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\sequelize\lib\model.js:939:5)
at async Sequelize.sync (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\sequelize\lib\sequelize.js:377:9) {
name: 'SequelizeDatabaseError',
parent: Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` ' at line 1
at Packet.asError (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\packets\packet.js:728:17)
at Query.execute (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\commands\command.js:29:26)
at Connection.handlePacket (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\connection.js:456:32)
at PacketParser.onPacket (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\connection.js:85:12)
at PacketParser.executeStart (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\packet_parser.js:75:16)
at Socket.<anonymous> (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\connection.js:92:25)
at Socket.emit (events.js:375:28)
at addChunk (internal/streams/readable.js:290:12)
at readableAddChunk (internal/streams/readable.js:265:9)
at Socket.Readable.push (internal/streams/readable.js:204:10) {
code: 'ER_PARSE_ERROR',
errno: 1064,
sqlState: '42000',
sqlMessage: "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` ' at line 1",
sql: 'CREATE TABLE IF NOT EXISTS `tasks` (`id` INTEGER NOT NULL auto_increment , `title` VARCHAR(255) NOT NULL, `description` VARCHAR(255) NOT NULL, `status` NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` DATETIME NOT NULL, PRIMARY KEY
(`id`)) ENGINE=InnoDB;',
parameters: undefined
},
original: Error: You have an error in your SQL syntax; check the manual that corresponds
to your MySQL server version for the right syntax to use near 'NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` ' at line 1
at Packet.asError (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\packets\packet.js:728:17)
at Query.execute (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\commands\command.js:29:26)
at Connection.handlePacket (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\connection.js:456:32)
at PacketParser.onPacket (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\connection.js:85:12)
at PacketParser.executeStart (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\packet_parser.js:75:16)
at Socket.<anonymous> (C:\Users\Kryolos.Hakeem\desktop\vodafone-tech-test\back-end-v2\node_modules\mysql2\lib\connection.js:92:25)
at Socket.emit (events.js:375:28)
at addChunk (internal/streams/readable.js:290:12)
at readableAddChunk (internal/streams/readable.js:265:9)
at Socket.Readable.push (internal/streams/readable.js:204:10) {
code: 'ER_PARSE_ERROR',
errno: 1064,
sqlState: '42000',
sqlMessage: "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` ' at line 1",
sql: 'CREATE TABLE IF NOT EXISTS `tasks` (`id` INTEGER NOT NULL auto_increment , `title` VARCHAR(255) NOT NULL, `description` VARCHAR(255) NOT NULL, `status` NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` DATETIME NOT NULL, PRIMARY KEY
(`id`)) ENGINE=InnoDB;',
parameters: undefined
},
sql: 'CREATE TABLE IF NOT EXISTS `tasks` (`id` INTEGER NOT NULL auto_increment , `title` VARCHAR(255) NOT NULL, `description` VARCHAR(255) NOT NULL, `status` NUMBER NOT NULL, `createdBy` NUMBER, `createdAt` DATETIME NOT NULL, `updatedAt` DATETIME NOT NULL, PRIMARY KEY (`id`)) ENGINE=InnoDB;',
parameters: {}
}
[nodemon] clean exit - waiting for changes before restart
so here is my connection:
const { Sequelize } = require('sequelize');
require('dotenv').config()
const Sequelized = new Sequelize(
process.env.DATABASE_NAME,
process.env.USER_NAME,
process.env.PASSWORD,
{
dialect: 'mysql',
host: process.env.DATABASE_HOST
}
);
module.exports = Sequelized;
and here is my entry-point for the app
const express = require('express');
const bodyParser = require('body-parser');
const cors = require('cors');
const router = require('./routes/tasks');
const Sequelized = require('./utiles/database');
const app = express();
require('dotenv').config();
app.use(cors());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(router);
Sequelized.sync()
.then((result) => {
console.log('result: ', result);
app.listen(3001, () => console.log('App is Listining on port 3001'));
})
.catch((err) => {
console.log('err: ', err);
});
and here is my task model definition
const { DataTypes } = require('sequelize');
const Sequelized = require('../utiles/database');
const Task = Sequelized.define('task', {
id: {
type: DataTypes.INTEGER,
autoIncrement: true,
allowNull: false,
primaryKey: true,
},
title: {
type: DataTypes.STRING,
allowNull: false,
},
description: {
type: DataTypes.STRING,
allowNull: false,
},
status: {
type: DataTypes.NUMBER,
allowNull: false,
},
createdBy: {
type: DataTypes.NUMBER,
allowNull: true
}
});
module.exports = Task;
and here is my attempt to run it
const Task = require("../models/task");
exports.CreateTask = (req, res) => {
const { title, description, userId } = req.body;
Task.CreateTask({
title,
description,
createdBy: userId,
status: 1
}).then(res => {
console.log('res: ', res)
}).catch((err) => {
console.log('err: ', err);
})
}
this issue happened only when I tried to use Task, to start creating tasks, I think the issue is re-priducable,
any help is appreciated for sure,
thanks

Answer 1

The problem is that you defined the model Taks and in the last piece of code, you export a function named CreateTask.
But inside this arrow function, you try to create a new Task but you're calling CreateTask again. And you also missed to specifie for title and description what are the keys you want to assign those values.
You should use Task.creat(... like this:
const Task = require("../models/task");
exports.CreateTask = (req, res) => {
const { title, description, userId } = req.body;
Task.create({
title: title,
description: description,
createdBy: userId,
status: 1
}).then(res => {
console.log('res: ', res)
}).catch((err) => {
console.log('err: ', err);
})
}