SQL Validator
Validate SQL queries and find syntax errors.
Input SQL
Enter the SQL query to validate
Validation Result
View syntax errors
About SQL Validator
The SQL Validator checks your database queries for syntax errors before you run them in production. It identifies misplaced commas, unclosed quotes, and reserved word conflicts.
How to Use
Real-World Examples
Fixing Trailing Commas
A very common mistake in SQL is leaving a trailing comma at the end of a SELECT or INSERT list.
SELECT id, name, email, FROM users WHERE active = 1;
SELECT id, name, email FROM users WHERE active = 1;
Best Practices
- Always validate massive database migration scripts before running them against a live database.
- Use backticks or brackets for column names that conflict with SQL reserved words.
Common Errors
Trailing comma before FROM
Remove the extra comma at the end of your column list.
Unclosed string literal
Ensure every single quote (') has a matching closing quote.
Frequently Asked Questions
Can it validate against my live database schema?
No, this tool only performs static syntax validation. It does not connect to your database to verify if tables or columns exist.
Is my data secure?
Absolutely. All processing is done locally in your browser. Your data is never sent to our servers.
Security & Privacy
We validate your SQL using client-side AST parsers. Your proprietary database schema names and query logic never leave your computer.