SQL Formatter

Format SQL queries with proper indentation and keyword styling. Make complex queries readable and easier to debug.

100% client-side No signup Free forever
Examples:
// how to use

How to Use SQL Formatter

  1. Paste your SQL query
  2. Select indentation size and keyword case preference
  3. Click "Format SQL" to beautify the query
  4. Use "Minify" to compress the SQL into one line
  5. Copy the formatted result
// features

Features

  • SQL syntax formatting
  • Customizable indentation
  • Keyword case options (UPPER/lower)
  • Query minification
  • Support for complex queries
  • JOIN formatting
  • Subquery indentation
// about

About SQL Formatter

Complex SQL queries can span dozens of lines with multiple joins, subqueries, and conditions. Poorly formatted SQL is notoriously difficult to debug and maintain. Our SQL Formatter transforms tangled queries into clear, structured statements that are easy to understand and modify.

Formatting Features

The formatter applies professional SQL styling:

  • Keyword capitalization: SELECT, FROM, WHERE, JOIN in uppercase
  • Logical line breaks: Each clause on its own line
  • Indentation: Nested subqueries and conditions properly indented
  • Alignment: Column lists and conditions vertically aligned

Why SQL Formatting Matters

Formatted SQL reveals the query's logic: which tables are joined, what conditions filter results, how data is grouped and sorted. This clarity helps spot errors like missing join conditions or incorrect WHERE clauses that would be invisible in a single-line query.

Database Compatibility

The formatter handles SQL dialects from MySQL, PostgreSQL, SQL Server, Oracle, and SQLite. While these databases have syntax differences, the formatting principles apply universally. Comments and database-specific syntax are preserved.

Team Collaboration Benefits

When all team members format SQL consistently, code reviews focus on logic rather than style debates. Stored procedures become documentation themselves. New team members can understand existing queries faster, reducing onboarding time significantly.

// faq

Frequently Asked Questions

What SQL dialects are supported?
We support standard SQL plus dialects: MySQL, PostgreSQL, SQL Server (T-SQL), Oracle, SQLite, and BigQuery. Each has unique functions and syntax. Select your database type for proper formatting of dialect-specific features.
How does SQL formatting improve readability?
Formatting adds: consistent indentation, keywords on new lines, proper alignment of clauses (SELECT, FROM, WHERE), uppercase keywords, and logical grouping of expressions. Complex queries become much easier to read, debug, and maintain.
Can I customize the formatting style?
Yes! Options include: keyword case (UPPER, lower, Capitalize), indentation (2, 4 spaces, tabs), line width limits, comma position (before or after), and alignment preferences. Save your preferred style for consistent formatting.
Does the formatter validate my SQL?
We validate syntax and highlight errors, but can't verify table/column names exist (that requires database connection). Syntax errors are shown with line numbers. We format even partially valid SQL where possible, highlighting issues.
How do I format SQL with parameters?
Prepared statement placeholders (?, :name, $1, @param) are preserved. These patterns are recognized and properly spaced. If your parameter syntax isn't recognized, let us know your database/framework for support.
Can I minify SQL instead of formatting?
Yes! Minify mode removes unnecessary whitespace for shorter SQL strings. Useful for logging, embedding in code, or reducing storage. Note: minified SQL is harder to read and debug - keep formatted versions for development.