regula.tools
100% Client-SideFormatters

Online SQL Formatter & Query Beautifier

Clean up minified, unformatted, or complex SQL queries in seconds. Select between major database dialects (PostgreSQL, MySQL, SQLite, BigQuery, T-SQL) with customizable keyword casing (UPPERCASE or lowercase) and indentation. Fast, reliable, and runs entirely in your browser without server upload.

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#How to Use This Tool

1Paste your unformatted SQL query into the left editor pane.
2Select your SQL dialect: PostgreSQL, MySQL, SQLite, BigQuery, or T-SQL.
3Choose keyword casing (UPPERCASE, lowercase, or preserve original).
4Pick your indentation style (2 spaces, 4 spaces, or tabs).
5Copy the beautified SQL query or download the formatted .sql script.

#Mathematical Formula & Standards

Lexical AST tokenization splits SQL scripts into keywords, identifiers, string literals, comments, and operator tokens. Keywords are case-normalized and hierarchical clauses (SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY) are aligned with recursive indentation. State is compressed into URL hash fragments (#v=1&d=...) to prevent SQL leaks in server access logs.

#Edge Cases & Technical Considerations

Dialect-Specific Quoting (Backticks vs Double Quotes)

MySQL identifier backticks (`table`) and PostgreSQL standard double quotes ("table") are parsed according to their dialect rules without breaking token streams.

Common Table Expressions (CTEs) and Window Functions

WITH clauses, recursive CTEs, and window functions (OVER (PARTITION BY ... ORDER BY ...)) maintain logical block indentation for maximum readability.

Multi-Statement Transaction Scripts

Scripts containing multiple SQL commands separated by semicolons are structured with clear spacing between individual statements.

#Frequently Asked Questions

Q:Are my proprietary database schemas or SQL queries sent to any server?

No. All tokenization and formatting take place in your browser’s local JavaScript engine. No query data ever leaves your computer.

Q:Does sharing a link expose my SQL query to the server?

No. Share links encode query state into the URL hash fragment (#v=1&d=...). Under HTTP standards, URL hashes are strictly client-side and never sent in HTTP server requests.

Have feedback or feature requests?

Help us improve this utility. Share suggestions, report edge cases, or request new features directly.

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