Use the # (MySQL comment) to neutralize any remaining code in the original query. 🎓 Educational Resources

by Halfond, Viegas, and Orso (IEEE Xplore).

(ACM Digital Library).

Are you researching this for or looking for a specific type of defense mechanism ?

Use UNION ALL SELECT 34,34 to merge a dummy row into the original query results. This helps an attacker determine the number of columns required for a successful data dump.