SQL Query Formatter

The formatter handles all common SQL statements including SELECT, INSERT INTO, UPDATE, DELETE FROM, CREATE TABLE, ALTER TABLE, and WITH (CTEs). It correctly formats JOIN variants (LEFT JOIN, RIGHT JOIN, INNER JOIN), GROUP BY, ORDER BY, HAVING, LIMIT, OFFSET, and UNION clauses.

No. All formatting happens entirely in your browser using JavaScript. Your SQL queries never leave your machine and are never stored anywhere.

The keyword case option lets you choose between UPPERCASE keywords (e.g. SELECT, FROM, WHERE) or lowercase keywords (e.g. select, from, where). UPPERCASE is the conventional SQL style and improves readability by visually separating keywords from identifiers.

Two-space indentation produces more compact output that is easier to read for shorter queries, while four-space indentation adds more visual separation and is preferred in teams that follow standard code style guides. Both are widely accepted in SQL formatting conventions.

Yes. The formatter preserves single-line comments (-- comment), block comments (/* comment */), single-quoted string literals, double-quoted identifiers, and backtick-quoted identifiers without modifying their contents.