What makes this SQL formatter different from others?

Our SQL formatter includes unique features like AI-powered query optimization, visual query execution plans, real-time performance analysis, SQL diff comparison, dependency mapping, security vulnerability scanning, and multi-dialect support with intelligent auto-detection.

Can it handle extremely large SQL queries?

Yes! Our formatter is optimized for performance and can handle large SQL queries efficiently. The progressive parsing and memory optimization ensure smooth operation even with queries containing hundreds of lines and complex subqueries.

Does the formatter support all SQL dialects?

Absolutely! Our formatter supports MySQL, PostgreSQL, SQL Server, Oracle, SQLite, BigQuery, Redshift, and more. It automatically detects the dialect or allows manual selection with dialect-specific formatting rules.

How accurate is the query optimization?

Our optimization engine uses advanced algorithms and best practices analysis to provide actionable suggestions. It considers indexing, query structure, join optimization, and performance patterns used by database experts.

Can I compare and version SQL queries?

Yes! We include built-in diff comparison to highlight changes between queries, version history tracking, and collaborative features for team development workflows.

What security features are included?

All SQL processing happens locally in your browser - no data is sent to servers. We include security scanning for SQL injection patterns, sensitive data exposure, and security best practices validation.

Advanced SQL Optimization Toolkit

Free Online SQL Formatter & Optimizer

Elevate your database workflow with our comprehensive SQL formatter featuring real-time SQL formatting and validation, AI-powered query optimization, visual execution plan viewer, security vulnerability scanner, multi-dialect SQL support (MySQL, PostgreSQL, SQL Server, Oracle, SQLite), performance analysis and metrics, SQL diff and comparison tool, dependency mapping and analysis, syntax highlighting with error detection, import/export file support, history and favorites management, and best practice recommendations—essential for database developers, administrators, data analysts, and anyone working with SQL databases.

Advanced SQL Formatter & Analyzer

Format, validate, optimize, and analyze SQL with advanced tools including query optimization, visual execution plans, security scanning, and performance analysis

Input SQL

Import File

Formatted SQL

Formatting Options

Indentation: 2 spaces

Line Length: 80 chars

Keyword Case

SQL Dialect

SQL Examples & Templates

Quick-start templates and examples for common SQL patterns and use cases

Simple SELECT

basicStandard

Basic SELECT query with filtering and ordering

SELECT customer_id, first_name, last_name, email

Complex JOIN Query

advancedStandard

Multi-table JOIN with calculations and filtering

SELECT

Analytical Query with Window

advancedStandard

Window functions with ranking and analytical calculations

SELECT

CTE and Aggregation

advancedStandard

Common Table Expressions with complex aggregations

WITH monthly_sales AS (

Data Modification

modificationStandard

Transaction with UPDATE and INSERT operations

BEGIN TRANSACTION;

Schema Creation

ddlPostgreSQL

Database schema with tables, constraints, and indexes

CREATE TABLE users (

Performance Insights & Best Practices

Query Optimization

Use proper indexing, avoid SELECT *, and optimize JOIN conditions for better database performance

Efficient Data Access

Implement proper pagination, use WHERE clauses effectively, and consider database-specific optimizations

Security First

Always use parameterized queries, validate inputs, and follow principle of least privilege for database access

Maintainable Code

Use consistent formatting, meaningful aliases, and CTEs for complex logic to improve code readability

What Developers Say

Join thousands of developers who rely on our SQL formatter

“This SQL formatter is exceptional! The query optimization suggestions and performance analysis have transformed how I write SQL. The visual query plan and dependency mapping are incredibly powerful.”

- Sarah M., Database Architect

Frequently Asked Questions

Get answers to common questions about SQL formatting and optimization