Conversion errors

Why a SQL conversion may fail

SQL Converter attempts to parse and transform SQL queries directly inside the browser. In some cases, a conversion may fail if the input query cannot be parsed correctly or contains unsupported syntax.

Common causes

  • Invalid SQL syntax.

  • Incomplete queries.

  • Unsupported dialect-specific features.

  • Broken quotations or parentheses.

  • Mixing multiple SQL dialects in the same query.

Example of malformed SQL 

SELECT id, name
FROM users
WHERE status = 'active'
ORDER BY

In this example, the query ends with an incomplete ORDER BY clause, making the statement invalid.

How to fix conversion issues

Recommended checks

  • Verify the SQL syntax.

  • Ensure the selected source dialect is correct.

  • Remove incomplete statements.

  • Check quotes, commas, and parentheses.

  • Try simplifying very large queries.

Browser-side parsing limitations

Since SQL Converter runs entirely client-side, parsing happens locally inside the browser using JavaScript parsers.

Extremely large queries or highly vendor-specific SQL extensions may not always be fully supported.

No SQL queries are sent to a remote server when an error occurs.