SQL Formatter
Format, beautify, and minify SQL queries instantly with dialect-aware formatting.
About This Tool
The SQL Formatter & Beautifier is a free browser-based tool that transforms messy, hard-to-read SQL queries into clean, well-indented code. Whether you are debugging a slow query pulled from a production log, reviewing a colleague's migration script, or preparing SQL snippets for documentation, this tool helps you make sense of any query in seconds.
Unlike many online formatters that send your queries to a remote server, this tool processes everything entirely in your browser. Your SQL never leaves your machine — there are no server round-trips, no logging, and no third-party tracking on your input. This makes it safe to use with queries that reference internal table names, proprietary schemas, or sensitive data conditions.
The formatter supports four SQL dialects: Standard SQL, MySQL, PostgreSQL, and SQLite. Each dialect applies language-specific formatting rules, ensuring that reserved keywords and syntax peculiarities are handled correctly. You can control keyword casing — convert all keywords to uppercase for readability, lowercase for consistency with your team's style guide, or preserve the original casing from the input.
Indentation is configurable with 2-space or 4-space options, letting you match your project's coding standards. The minify feature collapses a formatted query down to a single line by stripping comments and extra whitespace, which is useful when embedding SQL in application code or copying queries into command-line tools. A sample query button is included so you can quickly test the formatter without preparing your own input.
How to Use
- Paste or type your SQL query into the Input panel on the left (or use the Sample button to load an example query).
- Select your SQL dialect from the SQL Dialect dropdown (Standard SQL, MySQL, PostgreSQL, or SQLite).
- Choose your preferred Keyword Case (uppercase, lowercase, or preserve) and Indent Size (2 or 4 spaces).
- Click Format to beautify your query, or Minify to collapse it to a single line.
- The formatted result appears in the Output panel. Click Copy to copy it to your clipboard.
- Use Clear to reset both panels. Keyboard shortcut: Ctrl+Shift+C to copy output.
About This Tool
FAQ
Is my SQL data safe when using this tool?
Yes. All formatting and minification is performed entirely in your browser using JavaScript. No SQL queries are transmitted to any server. Your data stays on your machine at all times.
What SQL dialects are supported?
The tool supports four dialects: Standard SQL (ANSI), MySQL, PostgreSQL, and SQLite. Each dialect applies specific formatting rules that respect the syntax and reserved keywords of that database system.
What does the Minify button do?
The Minify button removes SQL comments (both single-line -- and multi-line /* */), collapses all whitespace to single spaces, and trims the result. This produces a compact, single-line query suitable for embedding in application code or CLI tools.
Can I format stored procedures or DDL statements?
Yes. The formatter handles a wide range of SQL statements including CREATE TABLE, ALTER TABLE, INSERT, UPDATE, DELETE, common table expressions (WITH), subqueries, and more. Complex queries with joins, unions, and nested subqueries are fully supported.
Why does the output look different when I switch dialects?
Each SQL dialect has its own set of reserved keywords and syntax rules. Switching dialects changes which words are recognized as keywords (and therefore affected by the keyword case setting) and may adjust formatting around dialect-specific syntax like MySQL's backtick identifiers or PostgreSQL's :: cast operator.
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