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: This is a SQL comment, which tells the database to ignore the rest of the original, legitimate query that follows. The Goal of the Attack
This specific string is designed to be appended to a vulnerable input field (the {KEYWORD} in your example) to probe the database structure: : Closes the original string literal in the SQL query. : This is a SQL comment, which tells
NULL is used because it is compatible with almost any data type (string, integer, date, etc.), ensuring the query won't fail due to data type mismatches. If the column count is wrong (e
If the column count is wrong (e.g., the original query has 7 or 9 columns), the database will return an error. The primary objective of using this payload is
: Appends a new set of results to the original query's output.
If the original query has 8 columns, the page will likely load normally or show an extra row of empty data.
The primary objective of using this payload is . For a UNION operation to work, the injected query must have the exact same number of columns as the original query.
