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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.
Explain the transaction in SQL Server.
A SQL transaction ensures data integrity by grouping SQL operations into a single unit that either succeeds completely or fails entirely.
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).
Explain the SQL CURSOR with example.
A cursor is a database object that enables traversal over the records in a result set. It allows sequential access to individual rows returned by a SQL query.
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:
Define the functions in SQL with examples.
in sql server, functions are reusable code blocks that perform a specific task and return a value.
Explain the SQL Stored Procedures.
SQL stored procedures are a powerful feature in SQL databases that allows you to encapsulate complex SQL logic and business rules into reusable code blocks.
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
NoSQL vs. SQL Databases: What to know?
SQL and NoSQL databases each provide their own advantages and disadvantages. Learn more about each one, including their structures, scalability, and use cases.
How executing SQL Queries in SQL Server Management Studio (SSMS) and Displaying Results?
SQL Server Management Studio (SSMS) is a powerful tool for executing SQL queries and displaying query results.