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

The primary goal of this specific syntax is to returned by the original, legitimate database query.

: 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). The primary goal of this specific syntax is

: Attackers use NULL because it is compatible with almost every data type (integers, strings, dates), making it the "safest" way to avoid syntax errors while testing column counts. The primary goal of this specific syntax is

: 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.