: This command attempts to append a new set of results to the original query's output.
The string you provided is a classic payload. It is not a feature of a specific software product but rather a technique used by security researchers and attackers to probe databases for vulnerabilities. Purpose of the Payload : This command attempts to append a new
: This is a SQL comment marker that tells the database to ignore the rest of the original query, preventing errors from leftover code. How it Works : This command attempts to append a new
: An attacker starts with one NULL and keeps adding more (e.g., NULL, NULL , then NULL, NULL, NULL ). : This command attempts to append a new