SQL Formatter

FAQ

What features does the SQL Formatter provide?

Our SQL Formatter provides a complete set of online SQL formatting and optimization tools for developers, database administrators, and data analysts. Key features include:

  • SQL Formatting (Beautify SQL): Automatically organize unformatted SQL into a clean and readable structure with proper indentation and line breaks.
  • SQL Minification (Minify SQL): Remove unnecessary whitespace, line breaks, and comments to generate more compact SQL.
  • SQL Keyword Case Conversion: Convert SQL keywords to uppercase, lowercase, or preserve the original casing.
  • Multi-Dialect SQL Formatting: Format SQL according to the syntax rules of different database systems.
  • One-Click Copy: Quickly copy formatted or minified SQL results for use in applications, scripts, and documentation.

Which SQL dialects are supported?

The formatter supports many popular SQL dialects, including:

  • Standard SQL
  • MySQL
  • MariaDB
  • PostgreSQL
  • SQLite
  • SQL Server (T-SQL)
  • Oracle PL/SQL
  • Snowflake
  • BigQuery
  • ClickHouse
  • Hive
  • Spark SQL
  • Redshift
  • Trino
  • DuckDB
  • TiDB

Additional dialects supported by the underlying SQL formatter library may also be available.

Will formatting change the behavior of my SQL queries?

No. SQL formatting only changes the visual layout of your query, such as indentation, line breaks, spacing, and keyword casing. It does not modify the query logic, execution plan, conditions, or result set.

Can I standardize SQL keyword casing?

Yes. The formatter supports three keyword casing modes:

  • Preserve: Keep the original keyword casing.
  • Uppercase: Convert SQL keywords to uppercase.
  • Lowercase: Convert SQL keywords to lowercase.

This helps maintain consistent coding standards across projects and teams.

What happens if my SQL contains syntax errors?

If the formatter encounters invalid SQL syntax, formatting may fail and an error message will be displayed. After correcting the syntax issue, you can run the formatter again to generate properly formatted SQL.

What is SQL Minification (Minify SQL)?

SQL minification removes unnecessary whitespace, indentation, line breaks, and comments while preserving query behavior. The result is a more compact SQL statement that is useful for logging, embedding in scripts, and reducing storage size.

Will my SQL be uploaded or stored?

No. All SQL formatting and minification are performed entirely within your browser (client-side processing). Your SQL statements are never uploaded to a server, stored, logged, or shared, ensuring maximum privacy and security.