Parameterization in SQL queries is a technique used to prevent SQL injection, which is a common security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. By using parameterized queries, the database can distinguish between code and data, regardless of the input received. This method ensures that an attacker cannot change the intent of a query, even if SQL commands are inserted by the attacker. While parameterization can also affect performance by enabling consistent query execution plans, its primary purpose is to enhance security.
Reference:
Medium article on SQL Query Optimization1.
MSSQLTips on SQL Query Performance2.
Blog post on SQL Performance Optimization3.
SQL Easy guide on improving SQL Query Performance4.
LearnSQL.com on SQL for Data Analysis5.