database SQL Formatter

About the SQL Formatter

Format, beautify, and validate SQL queries with our free online SQL formatter. Transform messy, minified, or auto-generated SQL into clean, readable code with proper indentation and consistent styling. Perfect for developers, database administrators, and data analysts who work with SQL databases.

Features

• Format / Beautify — Add proper indentation, line breaks, and consistent formatting
• Minify — Remove whitespace and comments to reduce query size
• Validate — Check for common SQL syntax errors
• Syntax Highlighting — Color-coded keywords, strings, numbers, and comments
• Multiple Dialects — Support for MySQL, PostgreSQL, SQLite, and SQL Server
• Customizable Options — Control indentation, keyword case, and formatting rules

Supported SQL Statements

Category	Statements
Data Query (DQL)	SELECT, FROM, WHERE, JOIN, GROUP BY, HAVING, ORDER BY, LIMIT
Data Manipulation (DML)	INSERT, UPDATE, DELETE, MERGE, UPSERT
Data Definition (DDL)	CREATE, ALTER, DROP, TRUNCATE, RENAME
Data Control (DCL)	GRANT, REVOKE
Transaction Control	BEGIN, COMMIT, ROLLBACK, SAVEPOINT

Formatting Options Explained

• Indentation — Choose 2 spaces, 4 spaces, or tabs for indentation
• Keyword Case — Convert keywords to UPPERCASE, lowercase, or preserve original
• New Line Before Keywords — Place major clauses (WHERE, FROM, JOIN) on new lines
• Indent JOIN Clauses — Indent JOIN statements for better readability
• Align Column Names — Align column names in SELECT lists vertically

SQL Dialect Differences

Different database systems have slight variations in SQL syntax:

• MySQL — Uses backticks for identifiers, LIMIT syntax, IF() function
• PostgreSQL — Uses double quotes for identifiers, :: for casting, array support
• SQLite — Limited data types, no stored procedures, uses || for concatenation
• SQL Server — Uses brackets for identifiers, TOP instead of LIMIT, T-SQL extensions

Best Practices for SQL Formatting

• Use UPPERCASE for SQL keywords for better readability
• Place each column on a new line in long SELECT lists
• Indent subqueries and JOIN conditions
• Use meaningful aliases for tables and columns
• Add comments to explain complex logic
• Separate multiple statements with semicolons

Privacy

All formatting and validation is performed entirely in your browser. Your SQL queries are never sent to any server, ensuring complete privacy for sensitive database code.