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NodeJS MySQL Create Table
  • Difficulty Level : Medium
  • Last Updated : 08 Feb, 2021

Introduction: Learn to create a table in MySQL database using NodeJS. We will see how to use the Create Table command in NodeJS using the MySQL module.

Prerequisite: Introduction to NodeJS MySQL

Setting up environment and Execution:

Step 1: Create a NodeJS Project and initialize it using the following command:

npm init



Step 2: Install the express and mysql modules using the following command:

npm install express
npm install mysql

File Structure: Our file structure will look like the following:

Example: Create and export MySQL Connection Object as shown below:

Filename: sqlConnection.js

Javascript




const mysql = require("mysql");
  
let db_con  = mysql.createConnection({
    host: "localhost",
    user: "root",
    password: '',
    database: 'gfg_db'
});
  
db_con.connect((err) => {
    if (err) {
      console.log("Database Connection Failed !!!", err);
    } else {
      console.log("connected to Database");
    }
});
  
module.exports = db_con;

Example 1: Creating a table without a primary key.



index.js




const express = require("express");
const database = require('./sqlConnection');
  
const app = express();
  
app.get("/", (req, res) => {
    
  let tableName = 'gfg_table';
  
  // Query to create table
  let query = `CREATE TABLE ${tableName} (
    name VARCHAR(255), address VARCHAR(255))`;
  
  database.query(query, (err, rows) => {
      if(err) return res.status(500)
          .send("Table Creation Failed");
  
      return res.send(
`Successfully Created Table - ${tableName}`);
  })
});
  
app.listen(5000, () => {
  console.log(`Server is up and running on 5000 ...`);
});

Run the index.js file using the following command:

node index.js

Output:

Successfully Created Table - gfg_table

Example 2: Create a Table with an auto-increment primary key.

index.js




const express = require("express");
const database = require('./sqlConnection');
  
const app = express();
  
app.get("/", (req, res) => {
      
    let tableName = 'gfg_table';
  
    // Query to create table
    let query = `CREATE TABLE ${tableName} 
        (id INT AUTO_INCREMENT PRIMARY KEY, 
        name VARCHAR(255), address VARCHAR(255))`;
  
    database.query(query, (err, rows) => {
        if(err) return res.status(500)
            .send("Table Creation Failed");
  
        return res.send(
`Successfully Created Table - ${tableName}`);
    })
});
  
app.listen(5000, () => {
  console.log(`Server is up and running on 5000 ...`);
});

Run the index.js file using the following command:

node index.js

Output:

Successfully Created Table - gfg_table


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