SQL Formatter & Beautifier
Format and beautify SQL queries with customizable options
Settings
SQL Formatter Documentation
How to Use This Tool
- Paste your SQL code into the input area
- Choose your formatting preferences (indent size, keyword case, etc.)
- Click "Format SQL" to beautify or "Minify SQL" to compress
- Copy the formatted result from the output area
Key Features
- Customizable indentation (2/4 spaces or tabs)
- Keyword case conversion (UPPER/lower/preserve)
- Multiple database dialect support
- Syntax highlighting for better readability
- Option to remove or preserve comments
- SQL minification for production use
Supported SQL Statements
SQL Formatting Best Practices
- Use consistent indentation throughout your codebase
- Keep SQL keywords in UPPERCASE for better visibility
- Place each major clause (SELECT, FROM, WHERE) on a new line
- Add comments to explain complex logic
Frequently Asked Questions
What is SQL formatting and why does it matter?
SQL formatting is the process of restructuring SQL code with consistent indentation, line breaks, and keyword casing — without changing what the query actually does. Well-formatted SQL is far easier to read during code reviews, easier to debug when something goes wrong, and simpler to maintain as your schema evolves. Most development teams adopt a style guide, and an online formatter lets you apply it instantly.
Does formatting change the behavior of my SQL query?
No. SQL formatting only affects whitespace, newlines, and letter case for keywords — none of which alter query execution. The database engine parses the cleaned-up version identically to the original. The sole exception is comments: if you choose the “remove comments” option, the formatter strips them, but the query logic itself remains untouched.
Which SQL dialects does this tool support?
The formatter supports Standard SQL as well as the most widely used dialects: MySQL, PostgreSQL, Microsoft SQL Server (T-SQL), and Oracle SQL. Dialect-specific syntax such as backtick identifiers in MySQL or double-colon casts in PostgreSQL is handled correctly in each mode.
Why do many developers keep SQL keywords in UPPERCASE?
SQL keywords are case-insensitive by specification, so SELECT, select, and Select all mean the same thing to the database. The convention of writing keywords in UPPERCASE originated in older terminals where it helped distinguish reserved words from table and column names at a glance. Many teams still prefer it for the same visual contrast reason. This formatter lets you choose UPPER, lower, or preserve — whichever fits your team’s style guide.
Can I format complex queries with subqueries, JOINs, and CTEs?
Yes. The formatter handles arbitrarily nested SQL including subqueries in SELECT, FROM, and WHERE clauses, multi-table JOINs, and Common Table Expressions (WITH ... AS). Each nesting level is indented consistently so the logical structure of even a 200-line query becomes immediately readable.
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