Best uses
Early SQL debugging, learning, query review, and catching obvious formatting or delimiter mistakes.
SQL Query Validator
Check common SQL query problems online. Detect unmatched quotes, brackets, missing clauses, incomplete statements and other common syntax issues.
Free SQL Query Validator
Use this free SQL Query Validator to identify common problems in SQL statements before testing them in a database environment.
What Does the SQL Validator Check?
- Empty SQL queries
- Unmatched parentheses
- Unmatched square brackets
- Unmatched curly brackets
- Unclosed quoted strings
- Incomplete SELECT statements
- Missing FROM clauses
- Incomplete INSERT statements
- Incomplete UPDATE statements
- Incomplete DELETE statements
- Basic clause ordering problems
- Missing semicolon warnings
Important:
This is a lightweight browser-based syntax checker.
It does not connect to your database and cannot guarantee
that a query will execute successfully on every SQL
database engine.
How to Validate SQL
- Paste your SQL query into the input box.
- Click Validate SQL.
- Review the detected errors or warnings.
- Correct the query and validate it again.
Frequently Asked Questions
Does this tool execute SQL?
No. The validator only analyzes the SQL text in your browser. It never connects to or executes queries against a database.
Can it detect every SQL error?
No. SQL syntax varies between database systems such as MySQL, PostgreSQL, SQL Server and SQLite. This tool checks common syntax patterns rather than replacing a database parser.
Is this SQL Validator free?
Yes. The tool is free to use online.