Understanding the SQL Server CASE statement

Querying data using the SQL Case statement

SQL CASE Statement - Simple and Searched Forms - Essential SQL

SSRS IIF, Switch and Choose Functions

SQL Server stored procedure case statement - DatabaseFAQs.com

Using a SQL Server Case Statement for IF/Else Logic

SQL IF Statement for Conditional Logic

Overview of SQL IIF Statement

IF-THEN logic in SELECT and WHERE with CASE expressions in Oracle SQL