Free Online SQL Formatter & Query Prettifier

Transform messy, unreadable SQL queries into structured, standardized code instantly. Supports MySQL, PostgreSQL, SQL Server, and Oracle dialects.

EN TR RU

Input

SQL
Basic SQL formatter (no external libs).

Output

Turning Chaos into Logic: Why Use an SQL Formatter?

Working with databases often involves dealing with raw SQL dumps, overly complex generated queries from ORMs like Hibernate or Entity Framework, or legacy code inherited from previous developers. These queries usually appear as dense, impenetrable blocks of text. Our SQL Beautifier is designed to dissect these structures. By applying intelligent line breaks before major keywords (like `SELECT`, `FROM`, `WHERE`, `JOIN`) and enforcing consistent indentation for sub-queries, we transform unreadable strings into logical, structured code blocks. This visualization is crucial for understanding data relationships and logic flow without mental exhaustion.

Optimizing Queries Through Better Visibility

Performance tuning is an essential part of backend development. You cannot optimize what you cannot read. When a query is properly formatted, structural inefficiencies—such as redundant joins, unintentional Cartesian products, or overly deep nesting—become glaringly obvious. Our tool helps developers and DBAs perform static analysis faster. By standardizing the syntax (e.g., capitalizing reserved words), the formatted output also makes it easier to spot syntax errors or logical fallacies that might be causing specific bugs or performance bottlenecks in your application.

Standardization for Code Reviews and Documentation

Consistency is key in software engineering. When multiple developers work on the same database schema, adhering to a unified SQL style guide ensures that code reviews focus on logic rather than formatting arguments. Using this tool allows teams to instantly standardize scripts before committing them to version control systems. Whether you are documenting a stored procedure for future reference or sharing a snippet on Stack Overflow, a clean, "pretty-printed" SQL query communicates professionalism and clarity.

FAQ
Yes, absolutely. We utilize client-side JavaScript processing. Your queries, table names, and sensitive data logic never leave your browser and are never stored on our servers.
Yes, our formatter is versatile. It recognizes syntax nuances for major systems including MySQL, PostgreSQL, MS SQL Server, Oracle, and SQLite, adjusting the formatting rules accordingly.
Currently, the focus is on "Beautifying" for readability. However, formatted code can often be easily minified again by removing line breaks if you need to save space for storage.
Deeply nested sub-queries are where this tool shines. It adds progressive indentation for each level of nesting, making the parent-child relationship of the data retrieval crystal clear.
No. SQL is generally whitespace-insensitive. The tool only adds spaces, tabs, and newlines for visual presentation; it does not alter the logical commands or values within the query.