SQL Formatter

About SQL Formatter

The SQL Formatter beautifies and formats messy SQL queries with proper indentation, keyword casing, and line breaks. It supports SQL dialects for MySQL, PostgreSQL, SQL Server, Oracle, SQLite, and standard ANSI SQL. Perfect for making complex queries readable, maintainable, and ready for code reviews — all processed instantly in your browser.

Why SQL Formatting Is Important

SQL queries can quickly become unreadable as they grow in complexity — multiple JOINs, subqueries, CTEs, CASE statements, and window functions create deeply nested logic that is impossible to follow without proper formatting. Well-formatted SQL makes debugging faster, code reviews easier, and team collaboration smoother. Consistent SQL style also reduces the risk of subtle logic errors that hide in dense, single-line queries generated by ORMs or query builders.

Supported SQL Dialects

• Standard SQL (ANSI) — the universal SQL syntax supported by all databases.
• MySQL — including MySQL-specific syntax like LIMIT, backtick quoting, and engine-specific functions.
• PostgreSQL — supports CTE syntax, window functions, array operators, and PL/pgSQL blocks.
• SQL Server (T-SQL) — handles TOP, NOLOCK hints, bracket quoting, and T-SQL specific statements.
• Oracle (PL/SQL) — supports ROWNUM, CONNECT BY, and Oracle-specific function syntax.
• SQLite — handles SQLite-specific pragmas and lightweight syntax variations.

Key Features

• Keyword uppercasing — automatically capitalizes SQL keywords (SELECT, FROM, WHERE, JOIN, ORDER BY) for readability.
• Smart indentation — indents subqueries, JOINs, CASE statements, CTEs, and nested clauses for clear visual hierarchy.
• Syntax highlighting — Ace Editor with SQL syntax highlighting, keyword completion, and line numbers.
• Minify option — compress SQL to a single line for embedding in code, log messages, or API payloads.

How to Format SQL

1. Paste SQL — paste your SQL query into the input editor or upload a .sql file.
2. Select dialect — choose the target SQL dialect if needed (defaults to standard SQL).
3. Format or minify — click Format to beautify or Minify to compress.
4. Export — copy the formatted SQL to your clipboard or download it as a file.

Real-World Use Cases

• Formatting complex SQL queries generated by ORMs (Entity Framework, Hibernate, SQLAlchemy) for code review and debugging.
• Cleaning up SQL extracted from application logs, slow query logs, or APM tools for performance analysis.
• Standardizing SQL formatting across a development team for consistent, readable database code.
• Preparing SQL examples for documentation, blog posts, technical presentations, or training materials.
• Formatting stored procedures, views, and migration scripts before committing to version control.