~/devtools / sql
tool::sql

SQL
Formatter

Format SQL queries with proper indentation and line breaks, uppercase keywords, and minify support.

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// Supported Clauses
SELECT, INSERT, UPDATE, DELETE, CREATE, ALTER, DROP, JOIN (INNER/LEFT/RIGHT/FULL), WHERE, GROUP BY, ORDER BY, HAVING, LIMIT, UNION
Indent:
// input
0 chars
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// about this tool

What is a SQL Formatter?

SQL (Structured Query Language) is the standard language for interacting with relational databases. Complex queries with nested subqueries, multiple JOINs, and compound conditions quickly become hard to read, making bugs difficult to spot and maintenance error-prone.

A SQL formatter standardizes keyword casing and applies consistent line breaks and indentation at each clause boundary, making the query structure immediately clear. It is an essential tool for code reviews and debugging queries generated by ORMs.

This tool works entirely in the browser without any external libraries. It supports common SQL statements including SELECT, INSERT, UPDATE, DELETE, DDL, multi-JOIN, subqueries, and CTEs.

Use Cases
  • ▸Beautify compressed SQL generated by ORMs for debugging
  • ▸Standardize SQL style before code review (uppercase keywords, indentation)
  • ▸Understand the structure of complex multi-JOIN queries
  • ▸Analyze single-line SQL extracted from log files
  • ▸Minify SQL queries before passing them via API payloads
FAQ
Q. Which SQL dialects are supported?
Standard SQL syntax covering MySQL, PostgreSQL, SQLite, and MS SQL Server is handled. Database-specific functions or proprietary syntax may not be perfectly formatted, but all common DML and DDL statements are supported.
Q. Does it validate SQL syntax?
No — this tool formats based on keyword detection without parsing for correctness. It will format even queries with syntax errors as best it can. For actual validation, run the query against your database.
Q. Are subqueries indented correctly?
Yes. Subqueries wrapped in parentheses receive additional indentation levels based on nesting depth.
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