SQL Formatter
Turn raw SQL queries into readable statements.
Coming soon
SQL Formatter is being built and will ship in the next release. It will run 100% in your browser like every other StackPulse utility. The documentation below explains what it does and how it works.
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Open toolWhy format SQL queries?
Raw SQL written during a debugging session is rarely pretty: single-line joins, inconsistent casing and inline subqueries that wrap past the edge of the screen. When that query breaks, or when it needs to move into a codebase, documentation or a migration file, readable formatting saves real time.
An SQL formatter normalises your query into a clean, indented, multi-line structure: one keyword per line at the right depth, consistent casing for keywords and identifiers, and clauses such as SELECT, JOIN, WHERE, GROUP BY and ORDER BY aligned so the query reads top-to-bottom. This makes complex logic with many joins and nested subqueries dramatically easier to review, explain and maintain.
Formatted SQL is also a better starting point for optimisation: with every clause on its own line you can quickly spot redundant joins, missing predicates or conditions that belong in a WHERE instead of a HAVING. And because the entire transformation runs client-side, you can format production-quality queries that reference internal schemas without leaking them to any server.
Common use cases
How to format a SQL query
- Paste the raw SQL statement into the input area, or load the sample query.
- Optionally set the keyword casing preference — upper, lower or preserve — and indentation width.
- Press Format or Ctrl / ⌘ + Enter to reformat the statement instantly.
- Review the result: joins, conditions and subqueries are aligned on their own lines.
- Copy the formatted query or download it as a .sql file for your migration or script.
Test cases
Input · SELECT u.id,u.name FROM users u JOIN orders o ON o.user_id=u.id WHERE u.active=1 ORDER BY u.id DESC
Multi-line statement with each clause on its own line and aligned ON/WHERE conditions.
Input · SELECT * FROM products WHERE category IN ('cloud','devops') AND price > 100
Two-line query with the WHERE clause and predicates split for readability.
Frequently asked questions
Which SQL dialects does the formatter understand?
The formatter targets ANSI SQL and the common syntax shared by PostgreSQL, MySQL, SQLite and SQL Server. Dialect-specific constructs such as array functions and JSON operators are preserved as-is.
Will the formatter change my query's meaning?
No. Only whitespace, casing and line placement are adjusted. The token stream of the query is preserved, so the statement executes exactly the same after formatting.
Is my query sent to a server?
Never. Formatting happens locally in your browser, so proprietary schemas and internal queries never leave your device.