SQL Formatter

Format, beautify, and minify SQL queries

Load sample:

Format Options

SQL Dialect

Keyword Case

Indentation

Tabs

Lines Between Queries

Options

Dense operatorsNewline before semicolon

Input SQL

Output

Quick Reference

DML

SELECT, INSERT, UPDATE, DELETE

DDL

CREATE, ALTER, DROP, TRUNCATE

Joins

INNER, LEFT, RIGHT, FULL

Functions

COUNT, SUM, AVG, MIN, MAX

How to Use This Tool

Paste Your SQL Query

Enter or paste your SQL query in the input area. The tool automatically validates syntax.

Configure Format Options

Select SQL dialect, keyword case preference, indentation style, and other formatting options.

Choose Output Mode

Select 'Format' to beautify your SQL or 'Minify' to compress it into a single line.

View Formatted Results

See your formatted SQL with proper indentation and consistent casing.

Copy or Download

Copy the formatted SQL to clipboard or download it as a .sql file.

Pro Tips

•Different SQL dialects have unique syntax rules - select the correct one for best results
•Use UPPERCASE keywords for better readability in production queries
•The tool detects and lists all table names referenced in your query
•Validation checks for common SQL syntax errors before formatting
•Dense operators remove spaces around operators for more compact formatting
•Load sample queries to see formatting examples for different query types

What is an SQL Formatter?

An SQL formatter is a tool that automatically formats and beautifies SQL queries for improved readability and maintainability. It transforms messy, unformatted SQL code into well-structured queries with proper indentation, consistent keyword casing, and logical grouping. Our formatter supports multiple SQL dialects including MySQL, PostgreSQL, SQL Server, Oracle, and SQLite, making it essential for database developers, data analysts, and anyone working with SQL queries. Whether you're debugging complex joins, optimizing stored procedures, or sharing queries with your team, proper formatting makes SQL code easier to understand and maintain.

Key Features

Multi-dialect support (MySQL, PostgreSQL, SQL Server, Oracle, SQLite)

Customizable keyword casing (UPPERCASE, lowercase, Capitalize)

Flexible indentation options (spaces or tabs)

SQL syntax validation with error detection

Query minification for compact storage

Automatic table and column detection

Export formatted queries as .sql files

Sample queries for common use cases

Real-time formatting as you type

Common Use Cases

Database Development: Format complex queries with multiple joins, subqueries, and CTEs for better readability during development and code reviews, ensuring consistent style across your database schema.

Query Optimization: Beautify queries before analyzing execution plans, making it easier to identify performance bottlenecks, redundant joins, or inefficient WHERE clauses in your SQL code.

Team Collaboration: Standardize SQL formatting across your team to improve code reviews, reduce merge conflicts, and maintain consistent query style in shared repositories and documentation.

Data Analysis: Format analytical queries with window functions, aggregations, and complex GROUP BY clauses to make business logic clearer for stakeholders and other analysts.

Database Migration: Convert queries between different SQL dialects while maintaining proper formatting, helping identify syntax differences when moving between database systems.

Documentation: Create well-formatted SQL examples for technical documentation, tutorials, or Stack Overflow answers, making your code examples more professional and easier to understand.

Frequently Asked Questions

Which SQL dialect should I choose?

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Select the SQL dialect that matches your database system: MySQL for MySQL/MariaDB, PostgreSQL for Postgres, T-SQL for SQL Server, PL/SQL for Oracle, or SQLite for SQLite databases. Each dialect has unique syntax rules and functions. If unsure, the standard SQL option provides the most compatible formatting that works across most databases.

Should SQL keywords be UPPERCASE or lowercase?

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This is largely a matter of team preference and coding standards. UPPERCASE keywords (SELECT, FROM, WHERE) make SQL statements more readable by clearly distinguishing keywords from identifiers. Many traditional SQL style guides recommend uppercase, but modern teams often prefer lowercase for consistency with other programming languages. Choose what your team agrees on and apply it consistently.

What's the difference between Format and Minify?

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Format mode beautifies your SQL with proper indentation, line breaks, and spacing to maximize readability. Minify mode removes all unnecessary whitespace, creating a single-line query that takes minimal space. Use Format for development, debugging, and documentation. Use Minify when you need compact queries for logs, URLs, or storage-constrained environments.

Can the formatter handle complex queries?

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Yes, the formatter handles complex SQL including nested subqueries, CTEs (Common Table Expressions), window functions, multiple joins, UNION operations, and stored procedure definitions. It maintains proper indentation levels for nested structures and preserves the logical grouping of related clauses, making even the most complex queries readable.

What are dense operators?

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Dense operators remove spaces around comparison and arithmetic operators (=, <>, +, -, etc.), creating more compact expressions like 'a=1' instead of 'a = 1'. This option is useful when you prefer more condensed formatting or need to match specific coding standards. Most style guides recommend keeping spaces for better readability, but the choice depends on your team's preferences.

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