{keyword} Union All Select Null,null,null,null,null,null,null,null-- Avdq Apr 2026

: This is a SQL comment symbol. It tells the database to ignore the rest of the original, legitimate code that follows.

: This command tells the database to combine the results of the original query with a new "injected" query. : This is a SQL comment symbol

An attacker can then replace the NULL values with commands to: Steal . Access private customer data . Delete or modify database records . : This is a SQL comment symbol

: The attacker is trying to determine how many columns the original database table has. They keep adding NULL values until the page loads correctly without an error. : This is a SQL comment symbol