SQL Formatter

What is a SQL Formatter?

A SQL formatter is a tool that takes a raw or compressed SQL query and rewrites it with consistent indentation, line breaks before major clauses, and properly capitalized keywords. Structured Query Language can become extremely difficult to read when written on a single line or when variable casing is used for keywords. By automatically applying a uniform style, the formatter helps developers, database administrators, and analysts understand query logic at a glance. It supports standard SQL syntax used across MySQL, PostgreSQL, SQLite, SQL Server, and Oracle, including JOINs, subqueries, common table expressions, and aggregate functions. Formatted queries are also far easier to review in pull requests and to include in documentation or technical specifications.

How to Use This Tool

1. Paste your SQL query into the input panel on the left. The query can be a single statement or multiple statements separated by semicolons.
2. Select your preferred indentation width — two spaces produces compact output while four spaces gives more visual separation between nesting levels.
3. Click Format SQL to generate the beautified result in the output panel.
4. Review the formatted query. Major clauses like SELECT, FROM, WHERE, JOIN, and ORDER BY will each appear on their own line, and conditions joined by AND or OR will be split onto separate lines for clarity.
5. Use the Copy button to copy the result to your clipboard, or click Download to save it as a .sql file.

Tips and Best Practices

• Capitalizing SQL keywords such as SELECT, INSERT, and UPDATE is the most widely followed convention and makes it easy to distinguish keywords from table and column names.
• Place each selected column on its own line in complex queries so that adding, removing, or reordering columns produces clean version-control diffs.
• Always format queries before adding them to code reviews — reviewers can focus on logic rather than struggling with layout.
• When debugging a long query, format it first and then comment out individual clauses to isolate the source of an error.
• For queries generated by ORMs or query builders, paste the raw output here to verify that the generated SQL matches your intentions.
• Combine formatting with an EXPLAIN or ANALYZE prefix to profile performance — a well-formatted plan is much easier to interpret than a wall of text.