Free online SQL Formatter. Beautify and indent complex SQL queries for MySQL, PostgreSQL, T-SQL, Oracle, SQLite, and BigQuery. 100% private in-browser formatting.
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How to Use SQL Formatter
Paste your raw, messy, or ORM-generated SQL query into the text editor.
Choose your preferred indentation style (2 spaces, 4 spaces, or tabs) and keyword case (UPPERCASE or lowercase).
Click "Format SQL" to instantly restructure clauses (SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY) onto clean newlines.
Use "Copy to Clipboard" to paste into DBeaver, pgAdmin, DataGrip, or VS Code, or switch to "Minify" to compress into a single line.
SQL Formatting Standards & Reserved Keywords
Consistent SQL formatting drastically reduces syntax errors in team environments and speeds up code reviews. Standard industry conventions include:
| Clause | Standard Placement | Indentation Rule |
| :--- | :--- | :--- |
| **SELECT** | Line start | Column list indented or stacked per line |
| **FROM** | New line | Base table name aligned with SELECT |
| **JOIN** | New line | `INNER / LEFT / RIGHT JOIN` on new line, `ON` condition indented |
| **WHERE** | New line | Conditions chained with `AND` / `OR` on subsequent indented lines |
| **GROUP BY** | New line | Aggregated dimension columns |
| **HAVING** | New line | Filter predicates on aggregated metrics |
| **ORDER BY** | New line | Sort dimensions with explicit `ASC` or `DESC` |
| **LIMIT / OFFSET** | New line | Result pagination boundaries |
Common SQL Formatting Mistakes to Avoid
- **Unformatted Subqueries**: Inlining deeply nested subqueries on a single line makes tracking parenthesis boundaries nearly impossible.
- **Mixed Keyword Casing**: Mixing `select`, `FROM`, and `where` creates visual noise. Enforcing UPPERCASE reserved keywords clearly differentiates SQL commands from table and column identifiers.
- **Misplaced Commas**: Trailing commas before `FROM` cause immediate syntax parse failures in strict database engines like PostgreSQL and Oracle.
Frequently Asked Questions
Which SQL database dialects are supported by this formatter?
The formatter supports ANSI SQL, MySQL, PostgreSQL, Microsoft SQL Server (T-SQL), Oracle PL/SQL, SQLite, MariaDB, Snowflake, and Google BigQuery syntax.
Is my proprietary SQL schema and data secure?
Yes, 100%. All formatting logic runs entirely in your browser using local JavaScript engines. Zero SQL code, table names, or confidential parameters are ever transmitted to any external server.
How should subqueries and JOIN clauses be indented in SQL?
Best practices dictate placing JOIN clauses on new lines aligned with FROM, with ON conditions indented. Subqueries within SELECT or WHERE clauses should be wrapped in parentheses and indented by one level (2 or 4 spaces) for visual hierarchy.
What is the difference between SQL Formatting and SQL Minification?
SQL formatting adds indentation, whitespace, and line breaks to maximize readability during development and debugging. SQL minification strips comments and extra whitespace to minimize payload size when embedding queries in migration scripts, APIs, or application config files.