{keyword} Union All Select Null,null,null,null,null,null-- Gojb ⚡

: The database executes: SELECT col1, col2, col3, col4, col5, col6 FROM products WHERE name = '' UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL--' .

: This "comments out" the rest of the original SQL query written by the developers. : The database executes: SELECT col1, col2, col3,

This string is a classic example of a used by security researchers and attackers to probe a website's database for vulnerabilities. This represents the original search term or input

This represents the original search term or input value that a legitimate user would enter. In an attack scenario, the "payload" (the rest of the string) is appended to this keyword to trick the database into executing an additional command alongside the intended query. 2. UNION ALL : The database executes: SELECT col1

Developers should use Parameterized Queries (Prepared Statements), which treat user input as literal data rather than executable code.

: By using six NULL values, the attacker is testing if the original query has exactly six columns.