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SQL Query Formatter

Properly indent, beautify, and clean messy database queries instantly. Support for custom dialects, keyword cases, and spacing with 100% client-side compilation safety.

SQL Dialect
Keyword Casing
Indentation
Load Database Sample
Raw SQL Query
Beautiful Formatted SQL

No formatted query generated yet.

Your beautified SQL will render here once processed.

Writing Clean Code: The Value of Well-Formatted SQL Queries

Relational databases are queried utilizing Structured Query Language (SQL). However, as query complexity increases—incorporating subqueries, recursive CTEs, and multiple inner/outer joins—raw SQL scripts quickly become unreadable, cluttered blocks of text.

Beautifying SQL is essential for peer reviews, debugging performance bottlenecks, and code checkins. Indenting join constraints and formatting keywords improves review efficiency. Maintaining keyword capitalization rules across queries helps engineers recognize data flows and query hierarchies at first glance.

Pillars of Readable Database Scripts

  • Consistent Capitalization: Capitalizing native database keywords makes tables and aliased fields immediately distinct.
  • Line Breaks for Clauses: Starting key clauses (like FROM, WHERE, GROUP BY, and HAVING) on fresh lines makes filter criteria highly scannable.
  • Indented Joins: Indenting join tables and listing constraint boundaries (`ON` conditions) below join declarations highlights relational maps clearly.

Our secure, local formatter leverages high-performance browser modules to restructure query trees client-side. Protect your business logic and schema parameters with zero cloud database exports.

Frequently Asked Questions (FAQs)

Which database SQL dialects are supported by this formatter?

We support major relational SQL dialects including Standard SQL, MySQL, PostgreSQL, MariaDB, Oracle PL/SQL, SQLite, and IBM DB2.

Does formatting my SQL queries send data to database clouds?

No. The SQL formatting, spacing, and keyword capitalization run 100% locally in your browser memory sandbox. Your proprietary table structures and database queries are strictly secure and confidential.

What does keyword casing options do?

Standard practices dictate that SQL keywords (like SELECT, FROM, JOIN, WHERE) should be in UPPERCASE to distinguish them from custom tables and fields. You can force keywords to UPPER, lower, or preserve their raw case.

How to Use This Tool

  1. 1Type, paste, or load a sample messy SQL statement into the input editor workspace.
  2. 2Configure your formatting parameters: choose your SQL dialect (e.g. Standard, PostgreSQL, MySQL).
  3. 3Select keyword case preference (UPPERCASE, lowercase, or preserve original).
  4. 4Adjust indentation sizing (2 spaces, 4 spaces, or standard tabs).
  5. 5Click the orange 'Format SQL' button to clean the query, then copy the output directly to your clipboard.