{ ILoveJS }

SQL Formatter

Format and beautify SQL queries with proper indentation.

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What is SQL Formatter?

SQL Formatter is a free online tool that takes raw, unformatted SQL queries and transforms them into clean, readable code with proper indentation, consistent keyword casing, and logical line breaks. Whether you're dealing with a single SELECT statement or a complex multi-join query with subqueries, the formatter structures your SQL so it's easy to read, review, and debug.

For developers, readable SQL is not a luxury — it's a necessity. Minified or poorly formatted queries are notoriously hard to audit, especially when tracking down logic errors in WHERE clauses or JOIN conditions. This tool helps you instantly beautify SQL copied from logs, ORMs, database tools, or legacy codebases, making peer review and debugging significantly faster.

How to Use

Using the SQL Formatter is straightforward. Paste your raw or minified SQL query into the input field and click the Format button. The tool will analyze the query structure, apply proper indentation to nested clauses, uppercase all SQL keywords (SELECT, FROM, WHERE, JOIN, GROUP BY, etc.), and add line breaks between logical sections of the statement. The output is clean, consistently styled SQL ready to copy back into your editor or share with a teammate.

The formatter handles a wide range of SQL constructs including SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, subqueries, CTEs (WITH clauses), and multi-table JOINs. Each clause is placed on its own line, and nested subqueries are indented to reflect their logical depth, making the query structure immediately apparent at a glance.

Keep in mind that the formatter is dialect-aware but optimized for standard ANSI SQL and common dialects like MySQL, PostgreSQL, and SQLite. Highly vendor-specific syntax or proprietary stored procedure blocks may produce partial formatting. Always review the output for correctness before using it in production environments.

Use Cases

Debugging complex queries: When an ORM or query builder outputs a long single-line SQL string to your application logs, paste it into the formatter to instantly make the logic readable and spot issues in JOIN conditions or WHERE filters.
Code review preparation: Before submitting a pull request that includes raw SQL migrations or stored procedures, format your queries to ensure they follow a consistent style that teammates can review quickly and accurately.
Learning and documentation: Educators and technical writers can take dense SQL examples and format them with clear indentation and uppercase keywords to produce clean, professional-looking snippets for tutorials, blog posts, or internal wikis.
Legacy codebase cleanup: When inheriting old codebases with inline SQL strings written without any formatting conventions, use the tool to normalize and beautify queries as part of a broader code quality improvement effort.

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