SQL Formatter

Format, prettify, minify, and validate SQL queries with syntax highlighting for multiple database dialects

SQL Input

SQL Query

Operation

Formatting Options

SQL Dialect

Indent Size

Uppercase Keywords

Sample Queries

Formatted SQL

Result

SELECT u.id, u.name, p.title, p.created_at
FROM users u
INNER
    JOIN posts p ON u.id = p.user_id
WHERE u.status = 'active' AND p.published = 1
ORDER BY p.created_at DESC
LIMIT 10;

Query Analysis

Type: SELECT

Characters: 177

Lines: 1

Words: 37

Tables: users, posts

MySQL Notes

• Use backticks for identifiers: `table_name`

• LIMIT syntax: LIMIT count OFFSET offset

• String concatenation: CONCAT(str1, str2)

SQL Best Practices

🎯

Formatting Standards

Use consistent indentation, uppercase keywords, and meaningful table aliases for readability.

⚡

Performance Tips

Use indexes wisely, avoid SELECT *, and prefer specific WHERE clauses over HAVING when possible.

🔒

Security

Always use parameterized queries to prevent SQL injection. Never concatenate user input directly.

📚

Maintenance

Write self-documenting SQL with clear aliases and comments for complex business logic.

SQL Formatter

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