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SQL Formatter

Format, beautify, and minify SQL queries instantly. Paste your SQL, choose a keyword casing style, and get clean, indented output.

Developer Tool

Paste your SQL query here to format or minify

Paste your SQL query above and click "Format SQL" to see the result

How to Use

  1. 1Paste your SQL query into the input area.
  2. 2Select your preferred keyword casing: UPPERCASE, lowercase, or Capitalize.
  3. 3Click Format to beautify the SQL with proper indentation and line breaks.
  4. 4Use Minify to compress the query into a single line if needed.
  5. 5Copy the formatted or minified SQL for use in your database tool or codebase.

About This Tool

The SQL Formatter beautifies and minifies SQL queries with configurable keyword casing. Paste in a complex query and get properly indented, readable SQL with consistent formatting — or compress it to a single line for embedding in code.

Complex SQL queries become unreadable quickly. A query with multiple JOINs, subqueries, and WHERE clauses can span hundreds of characters on a single line when copied from application logs or generated by an ORM. Formatted output with proper indentation reveals the query structure and makes debugging significantly easier.

Keyword casing options maintain consistency with your team's style guide. The UPPERCASE convention (SELECT, FROM, WHERE) is the most common in professional environments because it visually distinguishes SQL keywords from table and column names. Some teams prefer lowercase for a more modern look, and Capitalize offers a middle ground.

The formatter handles standard SQL syntax across common databases: MySQL, PostgreSQL, SQLite, SQL Server, and Oracle. While each database has proprietary extensions, the core SELECT, INSERT, UPDATE, DELETE, JOIN, and WHERE formatting works universally. All processing happens locally — your queries never leave your browser.

Tips & Best Practices

  • ✓Format SQL before code review. Reviewers catch logic errors much faster in properly indented queries than in single-line versions.
  • ✓When debugging ORM-generated queries, paste the generated SQL here to see the actual structure — ORMs sometimes produce surprisingly inefficient query patterns that are only visible when formatted.
  • ✓Use consistent keyword casing across your team. Establish a convention early and format all queries before committing — it eliminates unnecessary diff noise in version control.

Frequently Asked Questions

What SQL statements does this formatter support?▼
This formatter supports all major SQL statements including SELECT, INSERT INTO, UPDATE, DELETE FROM, CREATE TABLE, ALTER TABLE, and DROP TABLE. It also handles JOIN clauses (INNER, LEFT, RIGHT, FULL, CROSS), subqueries, UNION/INTERSECT/EXCEPT, CASE expressions, and aggregate functions like COUNT, SUM, AVG, MIN, and MAX.
Does SQL formatting affect query performance?▼
No, SQL formatting is purely cosmetic and has zero impact on query performance. The database engine parses and executes the query the same way regardless of whitespace, indentation, or keyword casing. Formatting only improves readability for developers reviewing or debugging the code.
What are common SQL coding standards for keyword casing?▼
The two most common conventions are uppercase keywords (SELECT, FROM, WHERE) and lowercase keywords (select, from, where). Uppercase keywords are the traditional standard and are recommended by most SQL style guides because they visually separate keywords from table and column names. However, lowercase is gaining popularity in modern teams. The most important thing is consistency within your project.
What are common SQL formatting mistakes to avoid?▼
Common mistakes include inconsistent keyword casing, cramming entire queries onto one line, not aligning JOIN and WHERE clauses, mixing tabs and spaces, and placing commas inconsistently (leading vs. trailing). Using a formatter like this tool ensures consistent, readable SQL across your team.
How do I format complex SQL queries with subqueries and CTEs?▼
For complex queries, the formatter adds newlines before major clauses (SELECT, FROM, WHERE, JOIN, etc.) and indents sub-clauses like AND/OR conditions. For deeply nested subqueries or CTEs, you may want to format them separately and then combine. This tool handles most standard complexity automatically.

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