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Explain the Aggregate functions in the SQL server.
Aggregate functions in SQL Server perform a calculation on a set of values and return a single value.
How do I handle NULL values in SQL Server queries and avoid common pitfalls?
Handling NULL values in SQL Server requires careful attention because NULL represents an unknown or missing value
MERGE statement in SQL Server to perform upserts (update/inserts).
The MERGE statement in SQL Server is a powerful way to perform "upserts" (a combination of inserts and updates).
How can I optimize SQL Server queries to improve performance?
Optimizing SQL Server queries to improve performance involves several strategies and techniques. Here are some key approaches:
How do I use CTE to simplify complex queries in SQL Server?
Common Table Expressions (CTEs) are a powerful feature in SQL Server that can simplify complex queries by breaking them down into more manageable parts.
Difference between INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN in SQL Server.
INNER JOIN, LEFT JOIN (or LEFT OUTER JOIN), RIGHT JOIN (or RIGHT OUTER JOIN), and FULL OUTER JOIN are different types of joins
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