{keyword} Union All Select Null,null,null,null,null,null,null,null-- Ppsq -

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 set of results to the original query's output.

The primary goal of this specific syntax is to returned by the original, legitimate database query. The string you provided is a classic payload

Once an attacker knows there are 8 columns, they can replace the NULL values with commands to extract sensitive data, such as usernames, passwords, or database versions. SQL injection UNION attacks | Web Security Academy

: An attacker starts with one NULL and keeps adding more (e.g., NULL, NULL , then NULL, NULL, NULL ). The primary goal of this specific syntax is

: This represents the original input (like a product category or search term) that the application expects.

: If the number of NULL values does not match the original query's column count, the server usually returns an error (like a 500 Internal Server Error). : This represents the original input (like a

: 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