This is one of the most cited papers in the field. It provides a comprehensive taxonomy of different SQL injection types, including UNION -based attacks like the one in your query.
Use -4215) to close an existing integer-based filter or function. -4215) UNION ALL SELECT 34,34#
(ACM Digital Library).
: The industry standard for web security risks, explaining why injection remains a top threat. This is one of the most cited papers in the field
The string -4215) UNION ALL SELECT 34,34# is a classic example of a payload. If you are looking for academic papers or technical resources related to how these attacks work, their prevention, or their history, here are several foundational and interesting papers: 🛡️ Fundamental Papers on SQL Injection or their history