SQL Formatter
Format and beautify SQL
SQL Formatter: Beautify Queries for Readability
Complex SQL queries become unreadable without proper formatting. Our formatter applies industry standards: uppercase keywords, indented clauses (SELECT/FROM/WHERE aligned), consistent commas, adjustable line breaks.
Support for standard SQL, MySQL, PostgreSQL, SQL Server, SQLite, Oracle. Detects the dialect automatically. Options for tab size, line width, comma style (leading/trailing), and clause alignment.
Ideal for developers reviewing legacy code, DBAs optimizing queries, or students learning SQL. Everything runs in the browser with the popular sql-formatter library.
How does it work?
- 1Paste your SQL
Enter the query no matter how compact or unformatted it is.
- 2Select the dialect
MySQL, PostgreSQL, SQL Server, Oracle, or auto-detect.
- 3Adjust format
Tab size, uppercase, comma style, line width. Preview updates in real time.
Frequently Asked Questions
No. Only formats visually: adds whitespace, line breaks, and consistent case. The generated SQL is functionally identical to the original. Never touches values, table names, or logic.
The formatter respects parameter placeholders in all styles: PostgreSQL ($1), Oracle (:name), MySQL (?). It doesn't try to substitute them, just preserves them in place.
Yes. The formatter handles Common Table Expressions (WITH ... AS), subqueries, JOINs, window functions and PARTITION BY. Complex queries with dozens of lines are formatted correctly with proper indentation.