Using CONCAT_WS with COALESCE to Handle Null Values in SQL Queries

Understanding the Power of COALESCE: Eliminating NULL Values Across Rows Using SQL and Alternative Approaches

Using COALESCE Correctly in WHERE Clause: Alternative Solutions to Common Issues

Understanding the Pitfalls of Using Multiple Conditions with ifelse(), coalesce(), and str_detect Functions in R

Grouping Items Together Based on a Value in Another Column: A SQL Solution