MSSQL DATABASE INTERVIEW QUESTIONS

What is a LEFT JOIN in MSSQL, and why is it used?

How do you perform a LEFT JOIN between two tables in MSSQL?

What is the difference between an INNER JOIN and a LEFT JOIN in MSSQL?

How do you use the LEFT JOIN to find unmatched records in MSSQL?

How do you use table aliases in a LEFT JOIN in MSSQL to simplify your query?

How do you filter the results of a LEFT JOIN using the WHERE clause in MSSQL?

How do you handle NULL values when using LEFT JOINs in MSSQL?

How do you use a LEFT JOIN with aggregate functions in MSSQL?

How do you optimize performance when using LEFT JOINs in MSSQL?

Explain a scenario where using a LEFT JOIN is crucial for a business application in MSSQL and describe how you would implement it.