Comments out the rest of the original query so it doesn't cause a syntax error [1, 5]. How to Prevent It:
Appends a new set of results to the original query [2, 5]. Comments out the rest of the original query
These can often detect and block common patterns like UNION ALL SELECT before they reach your server. Comments out the rest of the original query
Breaks out of the intended data field in a SQL query. Comments out the rest of the original query