{"id":1513,"date":"2025-05-31T12:59:14","date_gmt":"2025-05-31T12:59:14","guid":{"rendered":"https:\/\/www.wordpress-prod.sharpener.tech\/?p=1513"},"modified":"2025-06-02T11:01:31","modified_gmt":"2025-06-02T11:01:31","slug":"how-to-connect-mysql-to-node-js","status":"publish","type":"post","link":"https:\/\/www.sharpener.tech\/blog\/how-to-connect-mysql-to-node-js\/","title":{"rendered":"How to connect mysql to node js"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.wordpress-prod.sharpener.tech\/wp-content\/uploads\/2025\/05\/ChatGPT-Image-May-31-2025-06_27_27-PM-1024x683.jpg\" alt=\"\" class=\"wp-image-1514\" srcset=\"https:\/\/sharpener-wordpress.s3.ap-south-1.amazonaws.com\/blog\/wp-content\/uploads\/2025\/05\/31125831\/ChatGPT-Image-May-31-2025-06_27_27-PM-1024x683.jpg 1024w, https:\/\/sharpener-wordpress.s3.ap-south-1.amazonaws.com\/blog\/wp-content\/uploads\/2025\/05\/31125831\/ChatGPT-Image-May-31-2025-06_27_27-PM-300x200.jpg 300w, https:\/\/sharpener-wordpress.s3.ap-south-1.amazonaws.com\/blog\/wp-content\/uploads\/2025\/05\/31125831\/ChatGPT-Image-May-31-2025-06_27_27-PM-768x512.jpg 768w, https:\/\/sharpener-wordpress.s3.ap-south-1.amazonaws.com\/blog\/wp-content\/uploads\/2025\/05\/31125831\/ChatGPT-Image-May-31-2025-06_27_27-PM.jpg 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Hello Sharpnerians . I hope you are doing really well.<br>Now that we know the different queries that we can work with in sql let\u2019s try to see how we can connect it to a express app.<br>In this video, we will connect to a MySQL database using express js app .<br>We will then create a simple table named students in the database. This will give you a hands-on understanding of how to interact with MySQL using Node.js application.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Steps:<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Install the <\/strong><strong>mysql2<\/strong><strong> library to interact with the MySQL database.<\/strong><\/li>\n\n\n\n<li><strong>Create a MySQL connection to the database.<\/strong><\/li>\n\n\n\n<li><strong>Write a query to create a table if it does not exist.<\/strong><\/li>\n\n\n\n<li><strong>Execute the query to create the table and close the connection.<\/strong><\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 1: Install <\/strong><strong>mysql2<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To start, we need to install the mysql2 library to enable interaction with the MySQL database. Run the following command in your terminal:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">npm install mysql2<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 2: Create a Script to Connect and Create a Table<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Create a new file called create-table.js and add the following code:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/\/ Step 1: Import the express and mysql2 libraries<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">const express = require(&#8216;express&#8217;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">const mysql = require(&#8216;mysql2&#8217;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/\/ Step 2: Set up the express application<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">const app = express();<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">const port = 3000; \/\/ You can change the port as needed<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/\/ Step 3: Create a connection to the MySQL database<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">const connection = mysql.createConnection({<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;host: &#8216;localhost&#8217;, &nbsp; &nbsp; \/\/ Database host<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;user: &#8216;root&#8217;,&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; \/\/ Replace with your MySQL username<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;password: &#8216;password&#8217;,&nbsp; \/\/ Replace with your MySQL password<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;database: &#8216;testdb&#8217;,&nbsp; &nbsp; \/\/ Replace with your database name<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">});<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/\/ Step 4: Connect to the database and create the table<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">connection.connect((err) =&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;if (err) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;console.error(&#8216;Error connecting to the database:&#8217;, err.message);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;return;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;console.log(&#8216;Connected to the database.&#8217;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;\/\/ Step 5: Create a SQL query to create the &#8220;students&#8221; table<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;const createTableQuery = `<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;CREATE TABLE IF NOT EXISTS students (<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;id INT AUTO_INCREMENT PRIMARY KEY,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;name VARCHAR(100) NOT NULL,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;email VARCHAR(100) NOT NULL UNIQUE<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;`;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;\/\/ Step 6: Execute the query to create the table<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;connection.query(createTableQuery, (err, result) =&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;if (err) {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;console.error(&#8216;Error creating table:&#8217;, err.message);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;connection.end();<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;}<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;console.log(&#8216;Table &#8220;students&#8221; created or already exists.&#8217;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;\/\/ Step 7: Close the database connection after creating the table<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp;connection.end();<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;});<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">});<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/\/ Step 8: Define a basic route<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">app.get(&#8216;\/&#8217;, (req, res) =&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;res.send(&#8216;Hello, Sharpnerians! The MySQL database is connected, and the &#8220;students&#8221; table is set up.&#8217;);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">});<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/\/ Step 9: Start the Express server<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">app.listen(port, () =&gt; {<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;console.log(`Server is running on http:\/\/localhost:${port}`);<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">});<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Step 3: Run the Script<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To run the script, navigate to your project folder in the terminal and execute the following command:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">bash<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Copy code<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">node create-table.js<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Expected Output<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If the script runs successfully, you will see the following messages:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">plaintext<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Connected to the database.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Table &#8220;students&#8221; created or already exists.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If there\u2019s an issue connecting to the database or creating the table, you will see error messages indicating the problem.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/student.sharpener.tech\/register\">Register For Free<\/a><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation of the Script<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Step 1:<\/strong> We import the mysql2 library, which allows us to interact with MySQL databases.<\/li>\n\n\n\n<li><strong>Step 2:<\/strong> We create a connection to the database using mysql.createConnection(). We provide necessary credentials such as the host, user, password, and database name.<\/li>\n\n\n\n<li><strong>Step 3:<\/strong> The connection.connect() method is used to establish a connection to the database. If an error occurs, we log it, otherwise, we print a success message.<\/li>\n\n\n\n<li><strong>Step 4:<\/strong> A SQL query is created to check if the students table exists, and if not, it creates the table with three columns: id, name, and email.<\/li>\n\n\n\n<li><strong>Step 5:<\/strong> The connection.query() method is used to execute the SQL query. If the query executes successfully, we log the success message. If there is an error, we handle it accordingly.<\/li>\n\n\n\n<li><strong>Step 6:<\/strong> Once the query is executed, we close the database connection using connection.end() to release the resources.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In this simple script, we learned how to connect to a MySQL database from Node.js using the mysql2 library and create a table if it does not already exist. This forms the foundation for building more complex interactions with MySQL databases in your Node.js applications<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hello Sharpnerians . I hope you are doing really well.Now that we know the different queries that we can work with in sql let\u2019s try to see how we can&hellip;<\/p>\n","protected":false},"author":6,"featured_media":1514,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-1513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to connect mysql to node js - Sharpener Tech<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sharpener.tech\/blog\/how-to-connect-mysql-to-node-js\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to connect mysql to node js - Sharpener Tech\" \/>\n<meta property=\"og:description\" content=\"Hello Sharpnerians . I hope you are doing really well.Now that we know the different queries that we can work with in sql let\u2019s try to see how we can&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sharpener.tech\/blog\/how-to-connect-mysql-to-node-js\/\" \/>\n<meta property=\"og:site_name\" content=\"Sharpener Tech\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-31T12:59:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-02T11:01:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sharpener-wordpress.s3.ap-south-1.amazonaws.com\/blog\/wp-content\/uploads\/2025\/05\/31125831\/ChatGPT-Image-May-31-2025-06_27_27-PM.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1536\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Julian Toppo\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Julian Toppo\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/how-to-connect-mysql-to-node-js\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/how-to-connect-mysql-to-node-js\\\/\"},\"author\":{\"name\":\"Julian Toppo\",\"@id\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/#\\\/schema\\\/person\\\/eb9482df421e52d30f961eae8a0fd67a\"},\"headline\":\"How to connect mysql to node js\",\"datePublished\":\"2025-05-31T12:59:14+00:00\",\"dateModified\":\"2025-06-02T11:01:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/how-to-connect-mysql-to-node-js\\\/\"},\"wordCount\":782,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/how-to-connect-mysql-to-node-js\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/sharpener-wordpress.s3.ap-south-1.amazonaws.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/31125831\\\/ChatGPT-Image-May-31-2025-06_27_27-PM.jpg\",\"articleSection\":[\"Tips\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/how-to-connect-mysql-to-node-js\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/how-to-connect-mysql-to-node-js\\\/\",\"url\":\"https:\\\/\\\/www.sharpener.tech\\\/blog\\\/how-to-connect-mysql-to-node-js\\\/\",\"name\":\"How to connect mysql to node js - 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