Select 34,34,34,34,34,34,34,34,'qbqvq'||'udjcqbhpbt'||'qqbqq'-- Rlej - -9492 Union All

using -- to prevent syntax errors.

The input you provided appears to be a , which is a technique used to exploit vulnerabilities in a database by manipulating a query. using -- to prevent syntax errors

Specifically, this string uses the UNION ALL SELECT statement to attempt to: using -- to prevent syntax errors

(like 'qbqvq' , 'uDJcQBhPBT' , and 'qqbqq' ) to confirm that the injected code is successfully being executed and displayed in the output. using -- to prevent syntax errors

If you are a developer looking to protect your application from this type of attack, the best practice is to use (parameterized queries). This ensures the database treats user input as literal data rather than executable code.

in the original database query (indicated by the repeated 34 ).