SQL Formatter & Beautifier

What is SQL Formatter?

A SQL formatter reflows a cramped or generated query into a readable layout — uppercasing keywords, aligning clauses, and indenting subqueries and JOINs. Readable SQL is easier to review, debug, and maintain, especially for long analytical queries with multiple CTEs and nested subqueries. The formatter handles standard ANSI SQL plus common PostgreSQL, MySQL, and SQLite constructs.

How to format a SQL query

1. 1Paste your SQL — a single statement or a whole script — into the input pane.
2. 2The formatter reindents clauses and normalizes keyword casing.
3. 3Review the structure: JOINs, WHERE conditions, and subqueries are laid out clearly.
4. 4Copy the formatted query into your editor, migration, or code review.

Use Cases

Code Examples

select id,name from users u join orders o on o.user_id=u.id where o.total>100

SELECT id, name
FROM users u
JOIN orders o ON o.user_id = u.id
WHERE o.total > 100;

Key Concepts

CTE (Common Table Expression)

A WITH clause that names a temporary result set, making complex queries readable by breaking them into steps.

Dialects

SQL varies by database (PostgreSQL, MySQL, SQLite, SQL Server). Formatting is dialect-tolerant, but some keywords are engine-specific.

Formatting vs validation

This tool reformats structure; it does not execute or validate against a schema. Syntax errors are preserved so you still see them.

Tips & Best Practices

• ▸Formatting doesn't change semantics — a reformatted query runs identically to the original.
• ▸Uppercase keywords are a widely-followed convention that improves scannability, though lowercase runs fine.
• ▸Break long queries into CTEs (WITH) for readability instead of deeply nested subqueries.
• ▸The formatter preserves your literals and identifiers as-is; it won't fix a genuine syntax error.