SQL Formatter
Format SQL statements online. Supports MySQL, PostgreSQL, SQLite with syntax highlighting
About SQL Formatter
The SQL formatter tool helps you convert compact SQL statements into well-structured, easy-to-read format. It automatically identifies SQL keywords, clause boundaries, and applies appropriate line breaks and indentation. Supports MySQL, PostgreSQL, and SQLite dialects with syntax highlighting.
This tool supports multiple SQL dialects including MySQL, PostgreSQL, and SQLite, with formatting, minification, and syntax highlighting to help developers quickly beautify complex SQL statements.
Supported SQL Syntax
The tool supports formatting the following SQL syntax categories:
- SELECT / INSERT / UPDATE / DELETE：Data Manipulation: SELECT, INSERT, UPDATE, DELETE
- CREATE / ALTER / DROP：Data Definition: CREATE TABLE, ALTER TABLE, DROP TABLE
- JOIN / WHERE / GROUP BY / ORDER BY / HAVING：Common Clauses: WHERE, GROUP BY, ORDER BY, HAVING, LIMIT, JOIN (LEFT/RIGHT/INNER/FULL)
- UNION / INTERSECT / EXCEPT：Set Operations: UNION, UNION ALL, INTERSECT, EXCEPT
FAQ
Does formatting change SQL execution results?
No. Formatting only changes whitespace and line breaks in SQL statements without modifying any syntax structure. Execution results remain identical.
Does it support subqueries?
Yes. The tool correctly handles nested subqueries, clearly displaying query structure through indentation levels.
What are the differences between SQL dialects?
The main difference is in keyword recognition lists. MySQL has ENGINE, CHARSET and other specific syntax; PostgreSQL has SERIAL, JSONB types; SQLite has AUTOINCREMENT, PRAGMA. Choosing the correct dialect makes formatting more accurate.
Can it handle long SQL statements?
Yes. The tool has no length limit and can handle SQL statements of any length. The max line width parameter controls characters per line for more compact or relaxed layout.