SQL Prettify
Format and beautify SQL queries with proper indentation, keyword formatting, and line breaks. Support for multiple SQL dialects including MySQL, PostgreSQL, SQL Server, and more.
Formatting Options
Recommended Settings
SQL Formatting Best Practices
- •Use consistent keyword casing throughout your codebase
- •Standard indentation (2-4 spaces) improves readability
- •Format JOINs and WHERE clauses on separate lines
- •Add line breaks between major query sections
Dialect-Specific Formatting
- •Choose the correct SQL dialect for accurate formatting
- •PostgreSQL uses different syntax than MySQL for some features
- •T-SQL and PL/SQL have unique procedural extensions
- •BigQuery and Snowflake have cloud-specific optimizations
Code Maintainability
- •Formatted SQL is easier to review and debug
- •Proper indentation reveals query structure at a glance
- •Consistent formatting helps teams collaborate effectively
- •Well-formatted queries are easier to optimize
Pro Tips
- •UPPERCASE keywords make SQL more readable
- •Use 2-space indentation for compact formatting
- •Format long queries before committing to version control
- •Preserve original SQL files before formatting in production
Most Popular
MySQL dialect, UPPERCASE keywords, 2-space indent
When to Use This Tool
Format messy or minified SQL queries for better readability. Automatically add proper indentation, line breaks, and spacing to make complex queries easier to understand and maintain.
Recommended: Development
Standardize SQL formatting before code reviews. Consistent formatting makes it easier for reviewers to focus on logic rather than style, improving review efficiency and code quality.
Recommended: Team Collaboration
Format database migration scripts and schema definitions. Clean, well-formatted SQL makes migrations easier to review, test, and troubleshoot when issues arise.
Recommended: Database Management
Understand SQL query structure by formatting complex queries. Proper indentation and line breaks reveal how different clauses relate, helping you learn SQL syntax and best practices.
Recommended: Education
Format queries to identify syntax errors and logic issues. Well-formatted SQL makes it easier to spot missing parentheses, incorrect joins, and other common problems.
Recommended: Debugging
How It Works
Paste your SQL query into the input area
Select your SQL dialect (MySQL, PostgreSQL, etc.)
Configure formatting options (indentation, keyword case)
Click 'Format SQL' to beautify your code
Review the formatted output and statistics
Copy to clipboard or download as .sql file
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Frequently Asked Questions
Which SQL dialects are supported?
We support 12+ SQL dialects including MySQL, PostgreSQL, SQL Server (T-SQL), Oracle (PL/SQL), MariaDB, BigQuery, IBM DB2, Apache Hive, Amazon Redshift, Snowflake, Apache Spark, and standard SQL. Each dialect has specific syntax rules and formatting conventions.
What formatting rules are applied?
The formatter adds proper indentation, formats keywords and functions according to your case preference, adds line breaks at logical points (SELECT, FROM, WHERE, JOIN), aligns columns and conditions, and preserves comments. You can customize indentation size, keyword casing, and operator spacing.
Will formatting change my query logic?
No! Formatting only changes whitespace, line breaks, and keyword casing. The SQL logic, execution plan, and results remain identical. Your query will produce the same output before and after formatting.
Can I reverse SQL prettification?
Yes! Use our SQL Minify tool to remove formatting and compress SQL back to a compact form. However, the exact original formatting may not be preserved - you'll get a minified version instead.
How do I choose the right dialect?
Select the dialect that matches your database. Use MySQL for MySQL/MariaDB, PostgreSQL for Postgres, T-SQL for SQL Server, PL/SQL for Oracle. If unsure, try 'Standard SQL' first. Dialect-specific syntax (like PostgreSQL arrays or MySQL backticks) formats better with the correct dialect selected.
What is dense operators mode?
Dense operators mode packs operators tightly without extra spaces (e.g., 'a=b' instead of 'a = b'). This creates more compact output while maintaining readability. Disable it for more spacious, traditional SQL formatting.