A Developer's Guide to the SQL Syntax Validator

The SQL Syntax Validator is a quick and easy tool for checking your SQL queries for syntax errors before you run them. It helps you catch typos and structural mistakes early, saving you time and preventing errors against a live database.

Note: This tool only validates the syntax of the query. It does not connect to a database, so it cannot check for semantic errors like incorrect table or column names.

Features

• Multi-Dialect Support: The validator understands the specific syntax rules for various SQL dialects, including:
  • Standard SQL
  • PostgreSQL
  • MySQL
  • T-SQL (SQL Server)
  • and more!
• Real-time Feedback: The tool validates your query as you type, providing instant feedback on its validity.
• Clear Status Indicator: A badge at the top of the editor tells you immediately if your query has "Valid Syntax" or "Invalid Syntax".
• Descriptive Error Messages: If your query has a syntax error, a detailed error message appears below the editor, often pinpointing the exact location and nature of the problem.
• Modern Editor: The tool uses the powerful Monaco Editor (the engine behind VS Code) for a familiar editing experience with excellent SQL syntax highlighting.

How to Use

1. Paste Your SQL: Enter the SQL query you want to validate into the editor.
2. Select Your Dialect: Choose the correct SQL dialect from the dropdown menu. This is important, as syntax can vary between database systems.
3. Check the Status: As you type, watch the validation status badge.
   • If it's green and says "Valid Syntax," your query is syntactically correct for the selected dialect.
   • If it's red and says "Invalid Syntax," look at the error message below the editor. It will describe the issue so you can correct your code.