What is SQL?
SQL (Structured Query Language) is the standard language for working with relational databases. It’s used to query, insert, update, and delete data in databases like PostgreSQL, MySQL, SQLite, and SQL Server. SQL queries are written as text statements, and their readability depends heavily on how they’re formatted.
When SQL is generated programmatically, copied from logs, or pasted from external sources, it often arrives as a dense single line — keywords run together, indentation is absent, and subqueries are hard to follow. Reformatting it properly makes queries far easier to understand, debug, and share.
What Does This Tool Do?
This tool takes raw or minified SQL and formats it with consistent indentation, keyword capitalization, and line breaks. It supports standard SQL as well as common dialects. The result is clean, readable SQL that’s easier to review and modify.
How to Use This Tool
- Paste your SQL query into the input area.
- The formatted version appears immediately.
- Adjust indentation size if needed.
- Copy the result with the copy button.
Common Use Cases
- Code review: Make a complex query readable before sharing it in a pull request or ticket.
- Debugging: Understand a query that was auto-generated by an ORM or query builder.
- Documentation: Format queries clearly before including them in documentation or reports.
- Learning: See well-formatted SQL to learn proper style and structure.
Frequently Asked Questions
Which SQL dialects are supported?
The formatter supports standard SQL and handles common patterns from PostgreSQL, MySQL, and SQL Server. Very dialect-specific syntax may not be perfectly formatted, but most standard queries work correctly.
Does formatting change how a query runs?
No. Formatting only affects whitespace and capitalization — it has no effect on query execution or results.
Is my data private?
Yes. All formatting happens in your browser. Your SQL queries are never sent to any server.