What does SQL Formatter actually do?

The SQL formatter lays out clauses, joins, and lists so a query is readable. It does not execute SQL, bind parameters, or prove the query is valid for a specific database. Dialect support is formatting, not a planner.

Will formatting change query semantics?

It focuses on whitespace and layout for readability. Invalid SQL should surface as an error rather than a silent corruption.

Are my queries uploaded?

No. SQL formatting runs in your browser.

SQL Formatter

Beautify SQL queries with dialect-aware formatting (MySQL, Postgres, etc.). Free online — runs locally, no upload.

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SQL Formatter