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

: 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 to returned by the original, legitimate database query. : If the number of NULL values does

: This command attempts to append a new set of results to the original query's output. : If the number of NULL values does