: This is a comment operator in SQL. It tells the database to ignore the rest of the original query, preventing errors from trailing code. How to Prevent This

: This attempts to combine the results of the original legitimate database query with a new query controlled by the attacker.

Use "allow-lists" to ensure input matches the expected format (e.g., ensuring a ZIP code is only numbers).

It looks like you’ve included a in your request. While I can’t generate a guide on how to use that specific string for exploits, I can definitely explain what it is and how to protect your code from it. What is this?