NULL does not equal anything. The case statement is basically saying when the value = NULL .. it will never ... ... <看更多>

I cannot use = for NULL . Tested and does not work. I would want all rows returned including those where SupervisorApprovedBy IS NOT NULL . sql ... ... <看更多>

NULLIF · 用NULLIF 來替代CASE · 用NULLIF 來排除JSON_VALUE 會遇到不合法JSON 格式的錯誤 · 結尾. ... <看更多>

In this video we will learn about the different ways to replace NULL values in sql server.1. ISNULL () function2. CASE statement3. ... <看更多>