SQL Formatter Tool
Input SQL
Formatted Result
SQL Formatter Features
Professional online SQL formatting tool with syntax highlighting, case formatting, indentation control, and dialect support for MySQL, PostgreSQL, SQL Server, and more
Core Features
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Smart SQL Formatting
Intelligent formatting for multiple SQL dialects including MySQL, PostgreSQL, SQL Server and other mainstream databases
Syntax Highlighting & Validation
Real-time syntax checking and error positioning with professional code editing experience
Performance Analysis
Intelligent analysis of SQL query complexity, detecting potential performance issues with optimization suggestions
AI Smart Fix
One-click fix for common SQL syntax errors to improve development efficiency
How to Use
Four simple steps to format your SQL code
Input SQL Code
Enter or paste your SQL query statements in the left editor
Choose Format Options
Select SQL dialect, indentation size, and keyword case formatting options
Real-time Formatting
System automatically formats your SQL code and displays results on the right
Analyze & Export
View performance analysis report, copy or download formatted SQL code
Detailed Usage Guide
From basic formatting to advanced performance analysis, master the complete usage of SQL formatter tool
Basic Usage
Paste or enter your SQL code in the left input box
Select the corresponding database dialect (MySQL, PostgreSQL, etc.)
Adjust indentation size and keyword case options
The right side will display formatted SQL code in real-time
Click copy or download button to save results
Advanced Features
Use AI fix feature to automatically repair common syntax errors
View performance analysis report to understand query complexity
Click error hints to quickly locate problem positions
Batch process multiple SQL statements
View detailed statistics and optimization suggestions
Special Features
Our SQL formatter tool offers a range of professional features
Support for 11 mainstream database dialects including MySQL, PostgreSQL, SQL Server, Oracle
Intelligent detection of performance issues like SELECT *, missing WHERE clauses with professional optimization suggestions
Calculate query complexity score (1-10) based on joins, subqueries, aggregate functions and other factors
Support batch formatting of multiple SQL statements with automatic statement boundary recognition
Precise syntax error positioning, click error hints to quickly jump to problem lines
All processing is done locally in your browser, your SQL code is never uploaded to servers
Frequently Asked Questions
Common questions about SQL formatter tool
User Question
Expert Answer
SQL formatting is the process of beautifying SQL code according to standard formats, including keyword case unification, indentation alignment, line break standards, etc., making code more readable and maintainable.
User Question
Expert Answer
We support 11 mainstream database dialects including MySQL, PostgreSQL, SQL Server, Oracle PL/SQL, SQLite, MariaDB, IBM DB2, Google BigQuery, Apache Spark, Amazon Redshift.
User Question
Expert Answer
The system analyzes your SQL queries, detects common performance issues like SELECT *, missing WHERE clauses, Cartesian products, and provides complexity scores from 1-10 based on joins, subquery complexity and other factors.
User Question
Expert Answer
Completely secure. All SQL formatting and analysis is done locally in your browser, code is never uploaded to our servers, ensuring your data privacy and security.
User Question
Expert Answer
Theoretically no size limit, but for optimal performance we recommend individual SQL files not exceed 10MB. For very large files, the system will automatically optimize processing.
User Question
Expert Answer
AI fix can handle common syntax errors like missing spaces, extra commas, missing quotes, missing semicolons. For complex logical errors, manual review and modification is recommended.
Have more questions? Feel free to contact us
User Reviews
Feedback from real users
John Developer
Database Engineer
This SQL formatter tool is amazing! Supports multiple database dialects, professional formatting results, and the performance analysis feature helped me find many query optimization points.
Sarah Data
Data Analyst
Clean and intuitive interface, very fast formatting speed. I especially love the complexity scoring feature that gives a clear view of query complexity. AI fix is also very practical.
Mike Admin
DBA
As a DBA, I frequently need to format and optimize SQL. This tool's performance analysis feature is very professional, quickly identifying potential issues and greatly improving work efficiency.
Thanks for your feedback, we will continue to improve