SQL Formatter Online – Free SQL Beautifier & Query Formatter Tool

SQL Formatter Online

Format, beautify, and optimize your SQL queries instantly with our free online SQL formatter. Support for MySQL, PostgreSQL, SQL Server, Oracle, and more database systems.

Sample
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Output
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Formatting Options

SQL Formatter Features Comparison

Feature Basic Formatter IDE Plugin Our Tool
Multi-Database Support Limited βœ“ βœ“
Syntax Highlighting βœ— βœ“ βœ“
Custom Formatting Rules βœ— Limited βœ“
Minification βœ— βœ— βœ“
Comment Management Basic βœ“ βœ“
No Installation Required βœ“ βœ— βœ“
File Upload/Download βœ— βœ“ βœ“
Free to Use βœ“ Mixed βœ“

SQL Formatter Performance Metrics

Formatting Accuracy 99/100
Processing Speed 98/100
Database Compatibility 100/100
Customization Options 97/100
User Experience 96/100

How to Use SQL Formatter

Step 1: Paste Your SQL Code

Copy your SQL query or code from any source and paste it into the input panel on the left. You can also upload a SQL file using the upload button, or load a sample query to test the formatter. The tool accepts SQL code of any length, from simple SELECT statements to complex stored procedures with multiple subqueries.

Step 2: Select Database Type

Choose your database system from the dropdown menu (MySQL, PostgreSQL, SQL Server, Oracle, etc.). This ensures that the formatter applies the correct syntax rules and conventions specific to your database platform. Different databases have slight variations in keywords, functions, and formatting standards, so selecting the right type optimizes the output.

Step 3: Configure Formatting Options

Customize the formatting preferences according to your coding standards. You can choose to uppercase SQL keywords, adjust indentation size, enable comma-first style, align JOIN clauses, preserve or remove comments, and set maximum line length. These options let you match your team's coding conventions or personal preferences for optimal readability.

Step 4: Format and Export

Click the SQL Beautify button to format your code with proper indentation and spacing. Use SQL Minify to compress the code for production use, or Remove Comments to clean up documentation. The formatted SQL appears instantly in the output panel. Copy the result to your clipboard, download it as a SQL file, or share it using the share button.

Key Features

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Advanced SQL Beautification

Transform messy, unformatted SQL into clean, readable code with proper indentation, keyword capitalization, and logical clause separation. Our intelligent formatter understands complex query structures including CTEs, window functions, and nested subqueries.

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Multi-Database Support

Format SQL code for MySQL, PostgreSQL, SQL Server (T-SQL), Oracle, IBM DB2, MariaDB, SQLite, and standard SQL. Each database has optimized formatting rules that respect platform-specific syntax, functions, and best practices.

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Customizable Formatting Rules

Fine-tune every aspect of code formatting including indent size, keyword capitalization, comma placement, line length, subquery indentation, and comment handling. Create formatting styles that match your organization's coding standards.

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SQL Minification

Compress SQL code by removing unnecessary whitespace, line breaks, and comments. Minified queries reduce file size for production deployments, optimize network transfer, and improve application performance while maintaining query functionality.

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Comment Management

Choose to preserve, format, or completely remove SQL comments. Maintain inline and block comments during beautification for documentation, or strip them for cleaner production code. Supports both single-line (--) and multi-line (/* */) comment styles.

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Real-Time Processing

With auto-update enabled, see your SQL formatted instantly as you type. All processing happens client-side in your browser for maximum speed and privacy. No server uploads, no delays, no data transmissionβ€”just instant, local formatting.

SQL Formatting Best Practices

1. Use Consistent Keyword Capitalization

Write SQL keywords (SELECT, FROM, WHERE, JOIN, ORDER BY) in UPPERCASE to distinguish them from table names, column names, and values. This visual separation makes queries more readable and helps identify the structure at a glance. Most professional SQL developers and database administrators follow this convention.

2. Indent Nested Queries and Subqueries

Use consistent indentation (typically 4 spaces) for subqueries, derived tables, CTEs (Common Table Expressions), and nested SELECT statements. This hierarchical structure makes complex queries easier to understand, debug, and maintain. Proper indentation visually represents the logical query structure.

3. Place Each Major Clause on a New Line

Start each major SQL clause (SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY, LIMIT) on a new line. This vertical alignment makes the query structure immediately clear and allows easy scanning of the query logic. It also simplifies finding specific clauses when reviewing or modifying code.

4. Use Meaningful Table and Column Aliases

When using JOIN operations or complex queries, assign clear, descriptive aliases to tables and computed columns. Avoid single-letter aliases except in very simple queries. Good aliases improve query readability and make it easier to understand data relationships, especially in queries involving multiple table joins.

Common Use Cases

πŸ’Ό Database Development

Format complex stored procedures, triggers, and functions for better maintainability. Clean up legacy code and standardize formatting across your database projects. Improve collaboration by ensuring all team members work with consistently formatted SQL code.

πŸ” Query Optimization

Beautify messy queries to identify performance bottlenecks, redundant clauses, and optimization opportunities. Well-formatted SQL makes it easier to analyze execution plans, spot missing indexes, and refactor inefficient query patterns for better database performance.

πŸ‘₯ Code Review & Audits

Standardize SQL code formatting before code reviews to focus on logic rather than style. Audit database scripts and migrations with consistently formatted code. Ensure all SQL follows organizational coding standards and best practices for security and maintainability.

πŸ“š Learning & Education

Students and beginners can use the formatter to understand proper SQL structure and learn formatting conventions. Transform example queries into readable format to study query logic, table relationships, and SQL syntax patterns. Perfect for database courses and SQL tutorials.

πŸ“Š Data Analysis & BI

Format complex analytical queries with window functions, CTEs, and aggregations for better readability. Create clean, documented queries for business intelligence reports and dashboards. Share formatted SQL with stakeholders to explain data extraction and transformation logic.

πŸš€ Production Deployment

Minify SQL code before deploying to production environments to reduce file sizes and improve application load times. Remove unnecessary comments and whitespace from embedded SQL in applications. Optimize SQL delivery for web applications and microservices.

Frequently Asked Questions

What is SQL formatting and why is it important?

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Does formatting SQL affect query performance?

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Which database systems does this formatter support?

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Is my SQL code secure when using this online formatter?

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What's the difference between beautify and minify?

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Can I customize the formatting style?

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SQL Keywords & Clauses Supported

Our formatter recognizes and properly formats all standard SQL keywords and clauses across different database systems:

Data Query

SELECT, FROM, WHERE, JOIN, INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN, CROSS JOIN, UNION, INTERSECT, EXCEPT

Data Manipulation

INSERT, UPDATE, DELETE, MERGE, TRUNCATE, VALUES

Filtering & Sorting

WHERE, HAVING, GROUP BY, ORDER BY, LIMIT, OFFSET, TOP, FETCH

Schema Definition

CREATE, ALTER, DROP, TABLE, VIEW, INDEX, DATABASE, SCHEMA

Advanced Features

CTE (WITH), Window Functions (OVER, PARTITION BY, ROW_NUMBER), CASE, COALESCE, CAST

Transactions

BEGIN, COMMIT, ROLLBACK, SAVEPOINT, TRANSACTION