SQL Formatter

Make Any SQL Query Readable in One Click

SQL queries have a way of becoming unreadable. What starts as a simple SELECT statement grows into a multi-join query with subqueries, CASE expressions, window functions, and Common Table Expressions. When a colleague pastes a long query into a chat message or when you pull a query from application logs, the entire thing is often compressed onto a single line or formatted inconsistently. Reading it, let alone debugging it, becomes a chore.

This tool takes any SQL query, regardless of how messy or compressed it is, and reformats it into a clean, indented structure that reveals the logical flow at a glance. Each clause gets its own line, subqueries are indented, and keywords are consistently cased. The result is SQL that is easy to read, review, and maintain.

Why Consistent SQL Formatting Matters

Readability directly affects code quality. When SQL queries are well-formatted, reviewers catch logical errors, missing join conditions, and incorrect filters more quickly. Teams that enforce consistent SQL style spend less time in code reviews debating formatting and more time discussing logic. Formatted queries are also easier to version control because diffs show meaningful changes rather than whitespace noise.

Beyond code review, formatted SQL is essential for documentation. When you include a query in a wiki page, a runbook, or a technical specification, readers need to understand the logic quickly. A wall of unformatted SQL forces readers to mentally parse the structure before they can even begin to understand the intent.

Handling Complex Queries

The formatter’s parser understands the full grammar of modern SQL, including nested subqueries, CTEs using WITH clauses, window functions with OVER and PARTITION BY, CASE WHEN expressions, UNION and INTERSECT operations, and complex JOIN chains with multiple ON conditions. Each of these constructs is indented and aligned according to its nesting level, making even the most complex analytical queries approachable.

Entirely Client-Side

Your SQL never leaves your browser. This is particularly important for database queries that often contain table names, column names, and filter values that reveal proprietary schema details or business logic. Format with confidence knowing your data stays private.