SQL Formatter
Format and prettify SQL queries with syntax highlighting. Supports multiple SQL dialects.
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Output
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Frequently Asked Questions
What is SQL Formatter used for?
SQL Formatter beautifies and prettifies SQL queries with proper indentation and structure, making complex queries readable and easier to debug. It helps database developers write cleaner code, assists data analysts in understanding complex joins, and aids students learning SQL syntax by showing proper formatting conventions.
What SQL keywords and dialects are supported?
The formatter recognizes standard SQL keywords including SELECT, FROM, WHERE, JOIN variants (LEFT, RIGHT, INNER, OUTER, CROSS), GROUP BY, ORDER BY, HAVING, LIMIT, INSERT, UPDATE, DELETE, and DDL commands like CREATE TABLE and ALTER TABLE. It handles subqueries, CTEs (WITH clauses), and common window function syntax.
How does the formatter handle nested queries?
The tool properly indents subqueries and nested parentheses, increasing indentation depth for each nested level. This makes deeply nested queries visually understandable by showing the hierarchical structure of your SQL statements.
Is my data sent to a server?
No. All formatting happens entirely in your browser with no server communication. Your SQL queries, which may contain sensitive business data or proprietary logic, stay completely private on your device.
What keyboard shortcuts are available?
Press Ctrl+Enter (or Cmd+Enter on Mac) while in the input field to quickly format your SQL. This allows rapid reformatting during development without interrupting your workflow to reach for the mouse.
Can I use this to validate SQL syntax?
While this tool primarily formats SQL, it can help identify some syntax issues. If the output looks malformed or unexpected, your original SQL may have structural issues. For comprehensive validation, test your queries against your actual database engine.