SQL Formatter - Format SQL Queries Online

SQL Formatter is a powerful online tool that beautifies and formats SQL queries to make them more readable and maintainable. Whether you're working with MySQL, PostgreSQL, SQL Server, Oracle, or SQLite, this tool helps you write clean, professional SQL code with proper indentation and formatting.

Features

Format SQL queries with proper indentation
Minify SQL to reduce file size
Support for multiple SQL dialects (MySQL, PostgreSQL, MS SQL, Oracle, SQLite)
Customizable indentation (2, 4, or 8 spaces)
Syntax-aware formatting
One-click copy to clipboard
Character and line count
Load example queries
100% browser-based (no server uploads)
Free and unlimited use

How to Use

Paste your SQL query in the input box
Select your SQL dialect (MySQL, PostgreSQL, etc.)
Choose your preferred indentation size
Click "Format SQL" to beautify or "Minify SQL" to compress
Copy the formatted result to clipboard

Supported SQL Dialects

Standard SQL:

ANSI SQL standard syntax for maximum compatibility.

MySQL:

Popular open-source database used in web applications.

PostgreSQL:

Advanced open-source database with powerful features.

MS SQL Server:

Microsoft's enterprise database solution.

Oracle:

Enterprise-grade database for large organizations.

SQLite:

Lightweight embedded database for mobile and desktop apps.

Use Cases

Code Review: Make SQL queries readable for team review
Documentation: Format SQL for technical documentation
Learning: Understand complex queries with proper formatting
Debugging: Identify issues in poorly formatted SQL
Migration: Clean up SQL before database migration
Version Control: Consistent formatting for Git commits
Performance: Minify SQL for production deployment

Formatting Options

Format SQL:

Beautifies SQL with proper indentation, line breaks, and keyword capitalization. Makes queries easy to read and maintain.

Minify SQL:

Removes unnecessary whitespace and line breaks to create compact SQL. Useful for reducing file size in production.

Indentation:

Choose between 2, 4, or 8 spaces for indentation. Match your team's coding standards.

Example Transformations

Before (Unformatted):

SELECT u.id,u.name,u.email FROM users u WHERE u.status='active' ORDER BY u.created_at DESC;

After (Formatted):

SELECT
  u.id,
  u.name,
  u.email
FROM users u
WHERE u.status = 'active'
ORDER BY u.created_at DESC;

Best Practices

Use consistent indentation across your project
Capitalize SQL keywords (SELECT, FROM, WHERE)
Put each column on a new line in SELECT statements
Align JOIN conditions properly
Use meaningful table aliases
Format subqueries with extra indentation
Add comments for complex logic

Common SQL Keywords

Data Query:

SELECT, FROM, WHERE, JOIN, GROUP BY, HAVING, ORDER BY

Data Modification:

INSERT, UPDATE, DELETE, MERGE

Table Operations:

CREATE TABLE, ALTER TABLE, DROP TABLE

Joins:

INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN

Privacy & Security

All SQL formatting happens locally in your browser. Your SQL queries are never sent to our servers or any third-party services. This ensures complete privacy and security for your database queries and schema information.

Frequently Asked Questions

Does this tool validate SQL syntax?

This tool focuses on formatting. It doesn't validate syntax but will format most valid SQL queries correctly.

Can I format stored procedures?

Yes! The formatter works with complex SQL including stored procedures, functions, and triggers.

Is there a size limit?

No hard limit, but very large queries (>100KB) may take a moment to format.

Which dialect should I choose?

Choose the dialect that matches your database. Standard SQL works for most cases.

Can I save my formatting preferences?

Your dialect and indentation preferences are saved in your browser for convenience.