SQL Beautifier

Format and beautify SQL queries. Supports MySQL, PostgreSQL, SQLite and more.

Input SQL
Formatted SQL
Formatted SQL will appear here...

What is SQL Beautifier?

A SQL Beautifier (also called SQL Formatter) is a developer tool that takes unformatted, compressed, or poorly structured SQL queries and reformats them into clean, consistently indented, and highly readable code. SQL queries — especially complex ones involving multiple JOINs, subqueries, CTEs, and aggregate functions — can quickly become impossible to read when written as a single long line or without consistent formatting conventions.

Database developers, data analysts, and backend engineers work with SQL constantly, and readable queries are essential for code reviews, debugging, documentation, and collaboration. A well-formatted SQL query makes it immediately obvious what tables are being joined, what conditions are applied, what columns are selected, and how subqueries are structured.

SQL beautifiers support all major SQL dialects including MySQL, PostgreSQL, Microsoft SQL Server (T-SQL), SQLite, and Oracle SQL. They apply formatting rules like capitalizing keywords (SELECT, FROM, WHERE, JOIN), aligning clauses, and indenting nested queries, following widely accepted SQL style guides.

How to Use SQL Beautifier

  1. 1Step 1: Paste your raw, unformatted, or minified SQL query into the input text area. This could be a query from a log file, a database tool, an ORM-generated query, or code you wrote quickly without formatting.
  2. 2Step 2: Select your SQL dialect if the option is available (MySQL, PostgreSQL, T-SQL, Oracle, etc.) to ensure dialect-specific keywords and functions are handled correctly.
  3. 3Step 3: Click the 'Format' or 'Beautify' button. The tool will parse the SQL AST (abstract syntax tree) and apply standard formatting rules with proper keyword capitalization and indentation.
  4. 4Step 4: Review the formatted output carefully. Check that JOIN conditions, WHERE clauses, GROUP BY, HAVING, and ORDER BY sections are properly separated and indented for clarity.
  5. 5Step 5: Copy the formatted SQL and paste it back into your database IDE, code file, or documentation. You can also use the formatted version as the canonical version in source control.

Benefits of Using SQL Beautifier

  • ✓Improved Readability: Consistently indented and keyword-capitalized SQL is dramatically easier to read, understand, and maintain, especially for queries with multiple JOINs and subqueries.
  • ✓Faster Debugging: Well-formatted SQL makes it easier to spot logic errors, missing conditions, incorrect JOIN types, or wrong column references during troubleshooting sessions.
  • ✓Better Code Reviews: Formatted SQL in pull requests and code reviews is far more reviewable than single-line queries, enabling teammates to give meaningful feedback on logic and performance.
  • ✓Enforces Consistency: Applying consistent formatting across an entire codebase of SQL queries reduces cognitive overhead when switching between different queries or files.
  • ✓Handles Complex Queries: Beautifiers can format even extremely long queries with CTEs, window functions, nested subqueries, and CASE expressions that would be very tedious to format manually.
  • ✓Supports Multiple Dialects: Most SQL formatters understand MySQL, PostgreSQL, SQL Server, and SQLite syntax differences, making them versatile across different database technology stacks.

Example

A data analyst receives a query from a colleague that looks like this: 'select u.name,o.total,p.title from users u join orders o on u.id=o.user_id join products p on o.product_id=p.id where o.created_at>'2024-01-01' and o.status='completed' order by o.total desc limit 100'. Pasting this into the SQL beautifier produces a properly formatted query with each clause on its own line, JOINs clearly labeled, the WHERE conditions indented, and all keywords capitalized. The analyst can now immediately see the query logic, verify the JOIN conditions are correct, and spot that the date comparison might need timezone handling.

About SQL Beautifier

SQL Beautifier reformats SQL queries with consistent indentation, capitalized keywords, and proper line breaks to improve readability. It supports major SQL dialects including MySQL, PostgreSQL, and MSSQL. Paste messy SQL and get cleanly formatted output instantly.

  • Formats SQL with proper indentation
  • Capitalizes SQL keywords
  • Supports MySQL, PostgreSQL, MSSQL
  • Copy formatted SQL

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