SQL Syntax Validator
Paste a SQL query to check whether it is valid — complete with the reason if it is invalid and a component breakdown if it is valid. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
SELECT id name FROM users
Example Output
✗ INVALID — syntax near "name"
How to Use
- 1Paste the a SQL query you want to check into the input box.
- 2If the tool offers extra options (e.g. dialect, flags, or variant), set them as needed.
- 3Click Validate (or press Ctrl+Enter).
- 4Read the result badge — VALID, INVALID, or VALID with a warning — along with the details and the list of issues, if any.
About SQL Syntax Validator
SQL Syntax Validator parses a query with node-sql-parser and reports syntax errors. You can choose the dialect (MySQL, PostgreSQL, SQLite, MariaDB, or SQL Server) because SQL grammar differs between databases.
This only checks syntax — it does NOT run the query against any database, so it is safe for any query.
FAQ
Is my data sent to a server?
No. All validation runs in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.
How is this validator different from a parser or formatter?
A validator answers one question: is this input correct/valid? It returns a valid/invalid badge with the reason. A parser breaks input into its components, and a formatter tidies its layout. Use a validator when you just need to confirm something is sound before using it.