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About This Tool
The SQL Formatter organizes dense, single-line, or minified SQL queries into clean, readable code with standardized keyword capitalization and logical clause separation.
### Parsing Engine & Normalization Rules Writing and debugging raw database queries often yields unindented query strings. The formatter applies standard SQL layout conventions: - Keyword Uppercasing: Recognizes and capitalizes standard SQL keywords including SELECT, FROM, WHERE, JOIN, LEFT JOIN, INNER JOIN, ON, GROUP BY, HAVING, ORDER BY, INSERT INTO, UPDATE, DELETE, CREATE TABLE, ALTER, and DROP. - Structured Clause Line Breaks: Places major SQL clauses onto dedicated lines, establishing a natural vertical reading flow that mirrors database execution planning. - Logical Condition Indentation: Subdivides nested AND, OR, and ON filter conditions to clarify compound boolean logic. - Punctuation & Comma Handling: Preserves string literals, quoted column identifiers, and numeric constants without modifying query logic.
### Formatter Transformation Example Suppose you paste an unformatted query extracted from application server logs: - Raw Minified Query: `select id, first_name, salary from employees where department = 'Engineering' and salary > 90000 order by salary desc;` - Beautified Result: ```sql SELECT id, first_name, salary FROM employees WHERE department = 'Engineering' AND salary > 90000 ORDER BY salary DESC; ```
### Zero-Server Privacy Guarantee All string tokenization, regular expression replacements, and query formatting run strictly inside your local web browser. No proprietary database queries, table names, or customer data are ever transmitted across the internet.
How to Use
- 1
Paste or type your unformatted SQL query into the input editor.
- 2
The query is formatted immediately with uppercase keywords and structured clause breaks.
- 3
Inspect the beautified SQL query preview in the output pane.
- 4
Click Copy to clipboard to transfer the clean query back into your database client or codebase.
Frequently Asked Questions
Does this formatter modify query execution logic or table data?
No. The formatter only alters whitespace and keyword capitalization; it does not change column names, expressions, or query semantics.
Which SQL dialects are supported?
The formatter uses ANSI SQL keyword standards compatible with PostgreSQL, MySQL, SQLite, Microsoft SQL Server, Oracle, and MariaDB.
Is my SQL query transmitted to an external server?
No. All formatting logic executes locally in client-side JavaScript on your machine.