MySQL 9.4.0

Online MySQL Editor & Code Runner

Name: myCompiler MySQL
Author: myCompiler

myCompiler is a free online MySQL editor and code runner that lets you write, run, and share MySQL code directly in your browser. It works as your MySQL playground, sandbox, fiddle, cloud compiler, and online REPL. No downloads, no installation needed. Just open the editor and start coding with syntax highlighting, autocomplete, and instant output.

Start coding in MySQL How it works

27+ languages Used by 1M+ developers Free forever

main.sql

CREATE TABLE students (
  id INTEGER PRIMARY KEY,
  name TEXT NOT NULL,
  gender TEXT NOT NULL
);
INSERT INTO students VALUES (1, 'Ryan', 'M');
INSERT INTO students VALUES (2, 'Joanna', 'F');
SELECT * FROM students WHERE gender = 'F';

Output

id|name|gender 2|Joanna|F

How to run MySQL code online

Three steps to go from idea to running MySQL code in this online playground. No account required.

Write your code

Open the MySQL editor and start writing. The smart editor gives you syntax highlighting, autocomplete, and error detection as you type.

Click Run

Hit the Run button or press +Enter to run your MySQL code on secure, sandboxed cloud servers.

See results

Output appears instantly in the integrated terminal. Errors and exceptions show up with clear, helpful messages.

Everything you need to code in MySQL

A complete online MySQL IDE and coding playground in your browser. Write, run, and share code without any setup.

Zero setup required

Start coding in seconds with this browser-based MySQL interpreter. No downloads, no installations, no environment configuration. Open your browser, go to myCompiler, and start writing MySQL code immediately.

Works on any device with a web browser. Desktop, laptop, tablet, phone, Chromebook. There is nothing to install and nothing to configure.

Feature-rich code editor

Write MySQL with a professional-grade code editor built into your browser. Syntax highlighting colors your code for readability, making keywords, strings, and functions easy to distinguish at a glance.

Intelligent autocomplete suggests methods and properties as you type, and real-time error detection catches mistakes before you run your code.

Multi-file projects

Create and manage multiple files in a single project. Use the file sidebar to organize your code into modules, then import them across files just like in a desktop IDE.

Build modular applications with proper project structure. Each file is editable, and you can switch between them instantly.

Run code instantly

Click the Run button or press +Enter to execute your MySQL code instantly. This online code runner displays output immediately in the integrated terminal panel. Your code runs on secure, sandboxed cloud servers and results appear in seconds.

Error messages and tracebacks are displayed clearly, making it easy to find and fix issues. The terminal supports ANSI colors for rich output formatting.

Ready to try it? Write and run your first MySQL program in seconds.

Open MySQL editor

MySQL on myCompiler

myCompiler runs MySQL 9.4.0, always up to date with the latest stable release. You get a full browser-based IDE with syntax highlighting, intelligent code completion, multi-file project support, a built-in terminal for real-time output, and standard input (stdin) for interactive programs. Write, compile, run, and debug MySQL code on any device. Desktop, laptop, tablet, phone, Chromebook. Zero downloads, zero configuration, and no sign-up required. Save your programs with a unique URL and share them with anyone. You can also embed a working MySQL editor on your own website.

Use this online MySQL playground as a quick code executor for testing snippets, a coding sandbox for learning, or a cloud compiler for coding interview preparation. The editor includes dark mode for comfortable coding, keyboard shortcuts for faster workflows, and clear error messages with line numbers so you can debug quickly. Students use it for homework and practice. Teachers use it to share working examples. Developers use it to prototype ideas. myCompiler is beginner-friendly, fast, and completely free. It works in any modern web browser.

Start coding in MySQL

MySQL code examples

Common MySQL patterns you can try in the online compiler. Each example is ready to run.

SELECT Query in MySQL

main.sql

-- Basic SELECT query
SELECT 'Hello' AS greeting, 42 AS answer;

CREATE TABLE in MySQL

main.sql

CREATE TABLE students (
  id INT AUTO_INCREMENT PRIMARY KEY,
  name VARCHAR(100) NOT NULL,
  age INT,
  grade DECIMAL(3,1)
);

INSERT INTO students (name, age, grade) VALUES
  ('Alice', 20, 3.8),
  ('Bob', 22, 3.5),
  ('Charlie', 21, 3.9);

SELECT * FROM students;

WHERE and Filtering in MySQL

main.sql

CREATE TABLE products (id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(100), price DECIMAL(10,2), category VARCHAR(50));
INSERT INTO products (name, price, category) VALUES
  ('Laptop', 999.99, 'Electronics'),
  ('Book', 19.99, 'Education'),
  ('Phone', 699.99, 'Electronics');

SELECT name, price FROM products
WHERE price > 20 AND category = 'Electronics';

ORDER BY and GROUP BY in MySQL

main.sql

CREATE TABLE sales (product VARCHAR(50), region VARCHAR(50), amount DECIMAL(10,2));
INSERT INTO sales VALUES
  ('Widget', 'North', 100), ('Widget', 'South', 150),
  ('Gadget', 'North', 200), ('Gadget', 'South', 80);

SELECT product, SUM(amount) AS total
FROM sales
GROUP BY product
ORDER BY total DESC;

INSERT and UPDATE in MySQL

main.sql

CREATE TABLE users (id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(100), email VARCHAR(100));

INSERT INTO users (name, email) VALUES ('Alice', 'alice@example.com');
INSERT INTO users (name, email) VALUES ('Bob', 'bob@example.com');

UPDATE users SET email = 'alice@newmail.com' WHERE id = 1;

SELECT * FROM users;

Aggregate Functions in MySQL

main.sql

CREATE TABLE scores (student VARCHAR(50), subject VARCHAR(50), score INT);
INSERT INTO scores VALUES
  ('Alice', 'Math', 92), ('Alice', 'Science', 88),
  ('Bob', 'Math', 78), ('Bob', 'Science', 95);

SELECT student,
  AVG(score) AS average,
  MAX(score) AS best,
  MIN(score) AS worst
FROM scores GROUP BY student;

Subqueries in MySQL

main.sql

CREATE TABLE employees (id INT, name VARCHAR(100), salary DECIMAL(10,2), dept VARCHAR(50));
INSERT INTO employees VALUES
  (1, 'Alice', 90000, 'Eng'), (2, 'Bob', 75000, 'Mktg'),
  (3, 'Charlie', 95000, 'Eng'), (4, 'Diana', 80000, 'Mktg');

SELECT name, salary FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);

CASE WHEN in MySQL

main.sql

CREATE TABLE orders (id INT AUTO_INCREMENT PRIMARY KEY, total DECIMAL(10,2), status VARCHAR(20));
INSERT INTO orders (total, status) VALUES
  (250, 'shipped'), (50, 'pending'), (500, 'delivered');

SELECT id, total,
  CASE
    WHEN total >= 200 THEN 'Large'
    WHEN total >= 100 THEN 'Medium'
    ELSE 'Small'
  END AS size
FROM orders;

String Functions in MySQL

main.sql

CREATE TABLE users (name VARCHAR(50), email VARCHAR(100));
INSERT INTO users VALUES ('Alice', 'alice@example.com'), ('Bob', 'BOB@EXAMPLE.COM');

SELECT name, LOWER(email) AS email,
  LENGTH(name) AS name_length,
  CONCAT(name, ' <', LOWER(email), '>') AS formatted
FROM users;

JOIN Queries in MySQL

main.sql

CREATE TABLE depts (id INT, name VARCHAR(50));
INSERT INTO depts VALUES (1,'Engineering'),(2,'Marketing');

CREATE TABLE emps (id INT, name VARCHAR(50), dept_id INT, salary INT);
INSERT INTO emps VALUES (1,'Alice',1,90000),(2,'Bob',2,75000),(3,'Charlie',1,95000);

SELECT e.name, d.name AS department, e.salary
FROM emps e
INNER JOIN depts d ON e.dept_id = d.id
ORDER BY e.salary DESC;

Try these examples in the editor

How to take input in MySQL online

myCompiler supports standard input (stdin) for MySQL programs. Use MySQL's standard input functions to read user input. Enter your input data in the stdin panel before running your program.

This works for both single-line and multi-line input. You can read strings and convert to numbers using the language's built-in I/O functions.

Try it yourself

main.sql stdin supported

-- MySQL reads from tables, not stdin
CREATE TABLE greetings (
  name VARCHAR(50),
  age INT
);
INSERT INTO greetings VALUES ('Alice', 25);
SELECT CONCAT('Hello ', name, '!') AS greeting,
       CONCAT('You\'ll be ', age + 1, ' next year.') AS message
FROM greetings;

Output

greeting|message
Hello Alice!|You'll be 26 next year.

No setup, no sign-up. Start writing MySQL code right now.

Start coding now

Getting started with MySQL online

You can start writing and running MySQL code right now without installing anything. Type your code, and click Run. This free MySQL code runner executes your program instantly and displays the output in the terminal panel below the editor. Open the MySQL online editor, type your code, and click Run.

If you're new to MySQL, use this online MySQL playground to start with the basics like variables, data types, conditionals, and loops. The code examples above cover all the fundamentals you need to get started. Each example can be copied into the sandbox and run immediately. No setup, no configuration.

As you progress, try creating multi-file projects, using libraries, and sharing your programs with others via URL. Sign up for a free account to save your work and build a personal library of programs. myCompiler works as a full online MySQL IDE right in your browser.

Who uses myCompiler

Whether you're learning to code, preparing for interviews, or prototyping ideas, myCompiler is built for you.

Students & Learners

Practice exercises, complete homework assignments, and experiment with code without installing anything on school or personal computers.

Teachers & Educators

Share code examples with students via unique URLs. Embed the compiler in course materials so students can run examples directly in the browser.

Interview Candidates

Practice coding interview problems, test algorithms, and verify solutions quickly during preparation for technical interviews.

Professional Developers

Quickly prototype ideas, test code snippets, or try out a library without setting up a local environment. Great for quick experiments.

Content Creators & Bloggers

Embed interactive examples in blog posts, tutorials, and documentation so readers can run code without leaving the page.

Teams & Collaborators

Share code snippets with colleagues via URLs. Others can view, run, and fork your code to build on your work.

myCompiler vs. local IDE

Why use an online MySQL compiler instead of installing one locally?

Feature	myCompiler	Local IDE
Setup time	Instant	Minutes to hours
Installation	None required	MySQL + IDE required
Device support	Any browser	Desktop only
Sharing code	One-click URL	Manual (file, git, etc.)
Languages	27+ in one place	One at a time
Cost	Free forever	Free to $$$
Works on Chromebook	Yes	Limited

What is MySQL?

MySQL is an open-source relational database management system that uses SQL as its query language. Originally developed by MySQL AB (founded by Michael Widenius and David Axmark) and released in 1995, MySQL is now owned by Oracle Corporation and is one of the most deployed databases in the world. It powers the "M" in the classic LAMP (Linux, Apache, MySQL, PHP/Python/Perl) web stack.

MySQL's reputation for reliability, speed, and ease of use made it the database of choice for the early web. WordPress, Drupal, Joomla, and virtually every PHP application uses MySQL or MariaDB (its community fork). MySQL supports transactions with InnoDB, full-text search, JSON data type, window functions, and common table expressions (CTEs) in recent versions.

What is MySQL used for?

MySQL is used as the primary database for web applications, WordPress, Shopify, and millions of PHP/Laravel applications run on MySQL. It powers e-commerce platforms, content management systems, SaaS applications, and is widely used in data warehousing via MySQL-compatible cloud databases like Amazon Aurora. Companies like Twitter, YouTube, and Facebook used MySQL at massive scale before building custom solutions.

MySQL for beginners

MySQL is an excellent database to learn SQL because it is forgiving, well-documented, and widely used in tutorials and courses. The MySQL syntax is standard SQL with some extensions, making skills transferable to PostgreSQL, SQLite, and other databases. Use myCompiler's online MySQL editor to practice creating tables, inserting data, and writing SELECT, JOIN, and GROUP BY queries without installing a MySQL server.

MySQL vs other languages

Compared to PostgreSQL, MySQL is simpler and faster for read-heavy workloads but PostgreSQL has more advanced features (better JSON support, full ACID compliance, advanced indexing). Compared to SQLite, MySQL is a client-server database suited for production applications with multiple concurrent users, while SQLite is file-based and better for local development. Compared to MongoDB, MySQL uses a fixed schema and relational model, which is better for consistent, structured data.

Why use an online MySQL compiler?

An online MySQL editor, also called a MySQL sandbox or MySQL playground, lets you run MySQL queries directly in your browser without installing MySQL locally. This is perfect for learning MySQL syntax, practicing stored procedures, testing JOIN and GROUP BY queries, preparing for database-related job interviews, and experimenting with MySQL-specific features like AUTO_INCREMENT and ENUM types.

myCompiler's online MySQL IDE runs a full MySQL server. You can create tables, define foreign keys, write stored procedures, use transactions, and run complex queries with EXPLAIN. Each session starts with a fresh database. Save and share your scripts via URL, all free.

Why is MySQL so popular?

MySQL's popularity is rooted in being the default database for the web era. When PHP and MySQL emerged together in the late 1990s and early 2000s, they became the foundation of dynamic websites. WordPress's dominance (43% of all websites) continues to drive massive MySQL usage. MySQL's cloud variant, Amazon Aurora, provides MySQL compatibility with enterprise-grade scaling. Despite newer alternatives, MySQL remains one of the top three most-used databases worldwide.

MySQL career opportunities

MySQL knowledge is expected for web developer, backend developer, database administrator (DBA), and data analyst roles. Any PHP, Laravel, or WordPress developer will work with MySQL daily. MySQL DBA and MySQL performance tuning are specialized skills in high demand for production systems handling significant traffic.

Try MySQL online Free · No sign-up needed

Keyboard shortcuts

Code faster with these keyboard shortcuts in the myCompiler editor.

Run code

+ Enter

Save program

+ S

Toggle comment

+ /

Indent line

Tab

Unindent line

Shift + Tab

Undo

+ Z

Select next occurrence

+ D

Find & replace

+ H

Embed the MySQL compiler on your website

Add an interactive MySQL compiler to your website, blog, or learning platform. Readers can write and run MySQL code directly on your page without leaving it.

Perfect for technical tutorials, coding courses, documentation, and educational content. Save a program on myCompiler and use the embed link to add it to any webpage.

Embedded MySQL editor and code runner

HTML

<iframe
src="https://www.mycompiler.io
    /embed/mysql"
width="100%"
height="400"
frameborder="0">
</iframe>

Why developers choose myCompiler

A full-featured online IDE for MySQL and 27+ other programming languages.

27+ Languages

Python, JavaScript, Java, C++, Rust, Go, TypeScript, C#, and many more. All compilers and interpreters in one place. Switch languages instantly.

Dark & Light Mode

Switch between light and dark themes with one click. Code comfortably in any lighting condition, day or night.

Mobile Friendly

Fully responsive editor optimized for phones, tablets, and Chromebooks. Code on any device with a web browser. No app download needed.

Save & Share Code

Save programs to your account, share via unique URLs, and let others view, fork, and run your code. Great for collaboration and code reviews.

Tags & Organization

Organize your saved programs with tags and find them quickly with search and filters. Build a personal library of code snippets and solutions.

No Account Required

Start writing and running code immediately. No sign-up, no email, no credit card. Create a free account later only if you want to save your work.

Explore more programming languages

myCompiler supports 27+ languages. Switch between them anytime. All free, all in one place.

View all 27+ languages

Frequently asked questions

Common questions about using the online MySQL compiler, playground, and code runner.

Yes! myCompiler is completely free for all supported languages including MySQL. There are no subscriptions, no premium tiers, and no hidden costs. Every feature is available at no charge.

myCompiler keeps its MySQL environment up to date. You can see the exact version on the language details section of this page. We regularly update all language runtimes to their latest stable versions.

myCompiler runs a full MySQL server. You can create tables, insert data, run SELECT queries with JOINs, use stored procedures, and more. Each session starts with a fresh database.

Simply open the MySQL editor, write or paste your code, and click the Run button. Your code will be executed on our servers and the output will appear in the terminal panel within seconds.

Yes. Click Save to store your program. You will receive a unique URL that you can share with anyone. Recipients can view, fork, and run your code.

Yes. myCompiler supports multi-file projects. You can create, rename, and delete files in the sidebar. This lets you organize your MySQL code just like in a local IDE.

Yes. All code runs in isolated containers on our servers. Each execution gets its own sandboxed environment that is destroyed after completion. Your code cannot affect other users or our infrastructure.

Yes. myCompiler has a responsive design optimized for phones and tablets. You can write and run MySQL code on the go. The mobile interface uses tabs for switching between the editor, output, and file panels.

Yes. Click the Input tab in the bottom panel, type or paste your input data, then click Run. Your program will read from the input you provided.

Execution is fast. Code runs on our optimized cloud infrastructure and output typically appears within seconds. Execution time depends on the complexity of your program.

Yes. myCompiler provides an embed feature. You can copy an iframe snippet and paste it into your website, blog, or documentation. Visitors can edit and run code directly on your page.

myCompiler supports common editor shortcuts including Run (Ctrl/Cmd+Enter), Save (Ctrl/Cmd+S), Find (Ctrl/Cmd+F), and more. See the keyboard shortcuts section on this page for the full list.

No. myCompiler requires an internet connection because code is compiled and executed on our cloud servers. The editor itself loads in your browser, but running code requires connectivity.

myCompiler offers a fast, free, zero-setup environment with a modern code editor, multi-file support, dark mode, and instant sharing. It is ideal for learning, prototyping, interviews, and sharing code examples.

Yes. myCompiler is great for practicing algorithms and coding problems. You can write MySQL code, provide custom input, and test your solutions instantly. Save your work and come back to it anytime.

Use print statements or console output to trace your program's behavior. myCompiler shows all standard output and error messages in the terminal panel. Error messages include line numbers to help you locate issues.

Ready to write MySQL code?

Open the free MySQL playground and start coding immediately. No downloads, no account required.

Start coding in MySQL

Free · No sign-up required · MySQL 9.4.0