SQL Formatter

SQL Formatter: beautify, minify, and validate SQL queries. Supports MySQL, PostgreSQL, SQL Server, Oracle, SQLite, and MariaDB dialects.
All processing happens locally in your browser — your data is never uploaded to any server.
Dialect: ⚠ Named params Action:
⚠ Security Warning: SQL formatting is not a substitute for parameterized queries. Always use parameterized queries (prepared statements) in production code to prevent SQL injection attacks. This tool only formats your SQL for readability — it does not sanitize or validate against injection.
Input SQL
Output
How to use: Paste your SQL in the left textarea, choose a dialect and action, then click Process (or just type — auto-process on input).
Format: Beautifies SQL with consistent indentation, keyword casing, and clause alignment. Choose Indent (2 or 4 spaces), Keyword Case (upper, lower, or unchanged), and Lines Between Queries to control blank lines between statements.
Minify: Compresses SQL to a single line by removing all unnecessary whitespace — useful for embedding in code or reducing network payload.
Validate: Checks SQL syntax without reformatting. If the SQL is valid, a green confirmation is shown; otherwise, the specific syntax error is displayed.
Supported Dialects: MySQL, PostgreSQL, SQL Server (T-SQL), Oracle (PL/SQL), SQLite, MariaDB — each with dialect-specific keywords and syntax rules.
Why format SQL?

Formatting SQL changes only whitespace and line breaks — never semantics. What differs across databases is dialect: identifiers are quoted with backticks in MySQL, double quotes in PostgreSQL, and square brackets in SQL Server, so a formatter tuned for one dialect may misread another. Most teams uppercase keywords and lowercase names purely by convention.

A formatter is a readability tool — it will not optimize, rewrite, or validate your logic.