MSSQL DATABASE INTERVIEW QUESTIONS

What is the purpose of the IS NOT NULL operator in MSSQL, and how do you use it?

How do you check for non-NULL values in a numeric column using the IS NOT NULL operator in MSSQL?

Can you use the IS NOT NULL operator with string columns in MSSQL?

How do you combine the IS NOT NULL operator with the AND operator in MSSQL?

How do you combine the IS NOT NULL operator with the OR operator in MSSQL?

How do you use the IS NOT NULL operator in an UPDATE statement in MSSQL?

How do you use the IS NOT NULL operator with subqueries in MSSQL?

How do you handle non-NULL values in JOIN conditions using the IS NOT NULL operator in MSSQL?

How do you use the IS NOT NULL operator with CASE statements in MSSQL?

Explain a scenario where using the IS NOT NULL operator in MSSQL is crucial for a business application and describe how you would implement it.