SQL Formatter & Beautifier

What is a SQL Formatter?

A SQL formatter is a tool that automatically organizes and beautifies SQL queries by applying proper indentation, line breaks, and keyword formatting. It helps make complex SQL queries more readable and maintainable by developers and database administrators. This tool is essential for debugging queries, code reviews, and understanding database operations.

How to Use This Tool

1. Paste your SQL query into the input area on the left, or click "Load Sample" to see an example
2. Select your SQL dialect (MySQL, PostgreSQL, SQLite, etc.) from the dropdown menu
3. Choose your preferred indentation style (2 spaces, 4 spaces, or tabs)
4. Toggle "Uppercase keywords" if you want SQL keywords in UPPERCASE for better readability
5. Click "Format & Beautify" to organize your SQL with proper indentation and formatting
6. Use the "Copy Output" button to copy the formatted query to your clipboard
7. View statistics about your SQL including character count, line count, and file size

Common Use Cases

• Debugging Complex Queries: Make nested subqueries and joins more readable
• Code Review: Ensure consistent SQL formatting across your team
• Learning SQL: Study properly formatted queries to understand query structure
• Cleaning Legacy Code: Reorganize old or poorly formatted queries
• Database Migration: Format queries before committing to version control
• Query Optimization: Better understand query structure to identify optimization opportunities

Supported SQL Dialects

• Standard SQL: ANSI SQL-92/99 compliant queries
• MySQL: MySQL-specific syntax and functions
• PostgreSQL: PostgreSQL-specific features and syntax
• MariaDB: MariaDB-specific syntax
• SQLite: SQLite query syntax
• PL/SQL (Oracle): Oracle database procedural language
• T-SQL (SQL Server): Microsoft SQL Server syntax

Features

• Syntax Highlighting: Color-coded SQL for better readability
• Multiple SQL Dialects: Support for 7 major database systems
• Customizable Indentation: Choose between 2 spaces, 4 spaces, or tabs
• Keyword Formatting: Option to uppercase SQL keywords
• Copy to Clipboard: One-click copying of formatted output
• File Upload Support: Upload .sql files directly
• Statistics Display: View character count, line count, and file size
• Client-side Processing: All formatting happens in your browser - your queries stay private
• History Feature: Access previously formatted queries

Frequently Asked Questions

Is this tool free to use?

Yes! This SQL formatter is completely free to use with no registration required. There are no limits on usage or file size.

Is my SQL query secure?

Absolutely. All SQL formatting happens entirely in your browser using JavaScript. Your queries never leave your computer and are never sent to any server. This makes it safe to use with production database queries and sensitive data.

Which SQL dialect should I choose?

Choose the dialect that matches your database system. If you're not sure, start with "Standard SQL" which works for most common queries. For database-specific features like MySQL's LIMIT or PostgreSQL's RETURNING clause, select the appropriate dialect for best results.

Can I use this for large SQL files?

Yes! The tool supports files up to 10MB. Since all processing happens in your browser, there's no server-side file size limit. However, very large files may take a moment to process depending on your computer's performance.

Does this validate SQL syntax?

This tool primarily focuses on formatting and beautifying SQL. While it can detect some basic syntax errors during formatting, it's not a full SQL validator. For comprehensive validation, test your queries on your actual database system.

Does this work offline?

Once the page is loaded, all formatting functionality works offline. The tool doesn't require an internet connection to format SQL queries.

Are there keyboard shortcuts available?

Yes! Use Tab to navigate between buttons and text areas, Enter to activate focused buttons, and Escape while focused on text areas to quickly clear content.