Beautify and format messy SQL queries with proper indentation, keyword casing, and syntax highlighting.
A SQL formatter (also called a SQL beautifier) takes a dense, minified, or inconsistently indented SQL query and rewrites it with standardized whitespace, consistent keyword casing, and logical line breaks. Readable SQL is easier to review in pull requests, easier to debug in production, and significantly easier for new developers to understand.
SQL keywords (SELECT, FROM, WHERE) are conventionally written in UPPERCASE to visually distinguish them from identifiers and values. This tool normalizes any mix of cases to your preferred style.
Consistent 2- or 4-space indentation for subqueries, JOINs, and CASE expressions makes query structure immediately apparent. The tool aligns clauses so the visual hierarchy matches the logical hierarchy.
SQL syntax varies between databases — MySQL, PostgreSQL, SQL Server, and SQLite each have quirks. The formatter handles the most common constructs across all major dialects while preserving dialect-specific syntax.
Formatted SQL is diff-friendly — consistent style means pull request diffs highlight actual logic changes rather than whitespace noise. Teams that enforce SQL formatting standards catch more bugs in review.