SQL Derived Table Interview Questions and Answers

 SQL Derived Table Interview Questions and Answers - DT

Below are the most common interview questions based on the Derived Table (DT):

Q01. What is Derived Table and which version of SQL supports the Derived Table?

Q02. What is the difference between Derived Table and SubQuery?

Q03. Is Nested Derived Table and Recursive Derived Table allowed in SQL?

Q04. Can you use the Derived Table without the alias name?

Q05. Can you JOIN a table with the Derived Table?

Q06. Can you use a Derived Table in the WHERE clause?

Q07. Are duplicate column names allowed in the Derived Table?

Q08. Is an anonymous column name or column with no name is allowed in the Derived Table?

Q09. Can you use filter the record by applying the ORDER BY clause in the Derived Table?

Q10. Can you DELETE the records from the Derived Table? Does it also affect the actual underlying base table?

Q11. Can you UPDATE the records from the Derived Table? Does it also affect the actual underlying base table?

Q12. Can you INSERT the records from the Derived Table? Does it also affect the actual underlying base table?

Q13. Can you TRUNCATE the records from the Derived Table? Does it also affect the actual underlying base table?

Q14. What is the most common use of the Derived Table in SQL?

Q15. What is Table Value Constructor in SQL and how can you create it?

Q16. Can you specify the data types along with the column names in the Derived Table?

Q17. Can a Derived Table contain outer references in MS SQL?

Q18. How can you get the third-highest salary using the Derived Table?

Q19. How can you check and remove the duplicate records using the Derived Table?

Q20. How can you apply multi-level aggregations in SQL?

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