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

If the column count is wrong (e.g., the original query has 7 or 9 columns), the database will return an error.

If the original query has 8 columns, the page will likely load normally or show an extra row of empty data. If the column count is wrong (e

The payload you provided, ' UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL-- , is a common pattern used in to determine the number of columns returned by an original database query. What this Payload Does ' UNION ALL SELECT NULL