About SQL Formatter
SQL Formatter is a client-side query beautifier that transforms messy, minified, or single-line SQL into well-structured, readable code. It handles SELECT, INSERT, UPDATE, DELETE, CREATE, ALTER, and other SQL statements, applying consistent indentation, line breaks before major clauses (FROM, WHERE, JOIN, GROUP BY, ORDER BY, HAVING), and proper keyword alignment.
The formatter supports multiple SQL dialects including MySQL, PostgreSQL, SQLite, and ANSI SQL. Choosing the correct dialect ensures that dialect-specific keywords and syntax are handled appropriately. Since all processing happens in your browser, there is no risk of exposing sensitive query logic to third-party servers.
How to Use SQL Formatter
- Select your SQL dialect from the dropdown (MySQL, PostgreSQL, SQLite, or Standard SQL).
- Paste or type your SQL query into the input area.
- The formatted result appears instantly in the output area with proper indentation and line breaks.
- Copy the formatted SQL for use in your code editor, documentation, or database tool.
Key Features
- Multi-dialect support — MySQL, PostgreSQL, SQLite, and ANSI SQL
- Smart indentation — Adds proper line breaks and indentation for readability
- Keyword formatting — Standardizes SQL keyword casing and alignment
- Instant formatting — Results appear as you type with no button click needed
- 100% client-side — No server uploads; your SQL queries stay private
- Handles complex queries — Supports subqueries, JOINs, CTEs, and nested expressions
When to Use This Tool
- Making minified or single-line SQL queries readable for code reviews
- Preparing SQL for documentation, tutorials, or presentations
- Debugging complex queries by visualizing clause structure
- Standardizing SQL formatting across a development team
- Cleaning up auto-generated SQL from ORMs or query builders
Technical Details
The formatter parses your SQL input and identifies clause boundaries (SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY, HAVING, LIMIT, etc.), then inserts line breaks and indentation at appropriate positions. Subqueries and parenthesized expressions are indented to reflect nesting depth. The tool uses a JavaScript-based SQL parsing library that runs entirely in your browser. It does not execute, validate, or modify the logic of your queries — it only reformats whitespace and line breaks for readability.
Conclusion
SQL Formatter is an essential tool for any developer or database administrator who wants clean, readable SQL queries. With multi-dialect support and complete browser-side privacy, it makes code reviews, debugging, and documentation effortless. Pair it with SQL Escape for safe string handling in your queries.