SQL Formatter – Format, Minify, and Validate SQL Online
About the SQL Formatter
The SQL Formatter beautifies messy queries with proper indentation and keyword casing, minifies them into a single compact line, or validates them and reports the number of statements, keywords, tables, and columns detected. It works across MySQL, PostgreSQL, SQL Server, Oracle, and SQLite syntax, covering SELECT, INSERT, UPDATE, DELETE, CREATE, ALTER, and DROP statements.
It’s built for developers and DBAs cleaning up query logs, reviewing pull requests, or documenting database migrations. If your project mixes query results with other structured data, the JSON Formatter keeps API responses readable in the same way, and the XML Formatter & Validator covers config or feed files built around your database.
Our team tested this formatter against multi-join queries, nested subqueries, and mixed-case keywords to confirm indentation, keyword casing, and statement counts stay accurate across common SQL dialects.
How to Use the SQL Formatter
- Paste your SQL into the input field, or click Sample SQL to try it with example data.
- Choose an Action: Format/Beautify, Minify, or Validate Only.
- Set your preferred Indent Size, and toggle Uppercase Keywords or Strip Comments.
- Click Process SQL to see the result and query statistics.
- Use Copy Output or Download .sql to save your formatted query.
Example Usage
Input: select id, name from users where status = ‘active’ order by created_at desc;
Output (Formatted):
SELECT id, name
FROM users
WHERE status = ‘active’
ORDER BY created_at DESC;
Enabling Uppercase Keywords converts lowercase keywords like select and where into their standard uppercase form, which is a common style convention in SQL codebases. Once your query is clean, the CSS Beautifier is useful if you’re formatting other parts of the same project’s codebase.
Frequently Asked Questions
The formatter handles common syntax shared across MySQL, PostgreSQL, SQL Server, Oracle, and SQLite, including standard SELECT, INSERT, UPDATE, DELETE, and DDL statements.
No, it analyzes syntax structure and formatting only; it doesn’t connect to a database or verify that tables and columns actually exist.
Both single-line comments starting with — and multi-line comments wrapped in /* */ are removed entirely, leaving only the executable SQL.
Minify collapses the query into a single line with minimal spacing to reduce size, while Format adds line breaks and indentation to make the query easier to read and review.
Yes, it’s completely free with no signup required.
