MSSQL DATABASE INTERVIEW QUESTIONS

What is an UPSERT operation in MSSQL?

How do you perform a basic UPSERT operation using the MERGE statement in MSSQL?

What are the main clauses of the MERGE statement used for an UPSERT operation in MSSQL?

How do you handle multiple matching conditions in a MERGE statement for an UPSERT operation in MSSQL?

How do you use the OUTPUT clause with the MERGE statement in MSSQL?

How do you handle conflicts during an UPSERT operation in MSSQL?

How do you optimize the performance of an UPSERT operation in MSSQL?

How do you perform an UPSERT operation using the INSERT ... ON DUPLICATE KEY UPDATE pattern in MSSQL?

How do you use triggers to implement an UPSERT operation in MSSQL?

Explain a scenario where using the MERGE statement for an UPSERT operation is crucial for a business application in MSSQL and describe how you would implement it.