Paste any MySQL query. Get instant syntax validation, error detection, performance warnings and security checks.
The validator performs syntax checks (balanced parentheses, valid clause order, required keywords), performance analysis (SELECT *, missing LIMIT, cartesian joins), security scanning (potential SQL injection patterns, missing parameterisation hints), and best practice warnings (implicit column aliasing, ambiguous column names).
Most checks apply to both MySQL 5.7+/8.0+ and MariaDB 10.x. A few features like RETURNING are MariaDB-only — the validator will flag these.