Smart SQL formatter supporting all SQL statements — SELECT, INSERT, UPDATE, DELETE, and more. Toggle keyword case, adjust indentation, copy or download your formatted SQL.
Zero Dependency · Works Offline
What is SQL Query Formatter?
SQL Query Formatter is a free online tool that beautifies messy SQL statements into clean, well-structured, readable format. It supports all major SQL statement types including SELECT, INSERT, UPDATE, DELETE, and CREATE TABLE. An essential tool for developers, data analysts, and database administrators.
Key Features
- ✨ Auto-format SQL: Transform single-line or messy SQL into properly indented structure
- 🔠 Keyword case: Toggle between UPPERCASE and lowercase keywords
- 📐 Adjustable indentation: 2 spaces, 4 spaces, or Tab
- 🗜️ SQL Minifier: Remove unnecessary whitespace to compress SQL
- 📋 One-click copy: Copy formatted results to clipboard instantly
How to Use
- Paste your SQL into the left input panel
- Choose keyword case preference (UPPERCASE/lowercase)
- Select indentation style (2 spaces/4 spaces/Tab)
- Click "Format" or press Ctrl+Enter
- Copy or download the formatted result from the right panel
Use Cases
Database Development: Format complex SQL queries to spot syntax and logic errors more easily.
Code Review: Standardize SQL formatting across your team to improve readability and review efficiency.
Data Analysis: Clean up SQL snippets from various sources for easier analysis and modification.
Learning SQL: Observe the structure of formatted SQL to better understand statement components and syntax.
Technical Background
SQL (Structured Query Language) is the standard language for managing relational databases. Good SQL formatting practices significantly improve code maintainability. Industry best practices include: using UPPERCASE for keywords to distinguish them from identifiers, placing each clause on a new line, indenting JOIN conditions, and clearly marking aggregate functions. This tool follows mainstream SQL formatting conventions to help you write standard, readable SQL code.
Frequently Asked Questions
Which database SQL syntax is supported?▼
This tool supports MySQL, PostgreSQL, SQLite, SQL Server, and Oracle SQL syntax, including standard SELECT, INSERT, UPDATE, DELETE, CREATE, and ALTER statements.
Does formatting change the SQL execution result?▼
No. Formatting only changes whitespace and indentation — it never modifies keywords, identifiers, or values. The formatted SQL produces exactly the same result when executed.
What is SQL minification used for?▼
Minification removes unnecessary whitespace and newlines to produce a single-line SQL string. Useful when embedding SQL in code strings, configuration files, or log output.
Is my data uploaded to a server?▼
No. All processing is done locally in your browser. Your SQL never leaves your device, making it safe to use with queries containing sensitive data.
Can I format multiple SQL statements at once?▼
Yes. Multiple SQL statements separated by semicolons are formatted independently, each maintaining its proper structure and delimiter.
What are the keyboard shortcuts?▼
Ctrl+Enter to format, Ctrl+Shift+C to copy results, Ctrl+Shift+X to clear input. All shortcuts work when the input area is focused.
Is there a character limit?▼
We recommend formatting no more than 50,000 characters at a time. For very large SQL, consider formatting in sections.