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

: Attempts to select 8 columns of "null" data.

If the original query has 8 columns, the page will likely load normally or show an extra row of empty data. : Attempts to select 8 columns of "null" data

: 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 : Attempts to select 8 columns of "null" data