SQL Fundamentals🧩| Oracle Database Quiz🎓| 25 Tricky Interview Questions

Описание: Test your SQL skills 🧠💡with our tricky quiz on SQL Fundamentals! 🔍💡 Dive into query-based learning and master the basics of Oracle Database. Query Hub - Ask, Learn, and Excel!

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00:00 Master SQL Basics
00:12 1. What does the CREATE command do in SQL?
00:28 2. Which command is used to add a new column to an existing table?
00:44 3. What does the DROP command do?
01:00 4. Which command quickly removes all rows from a table but retains the table structure?
01:17 5. What is the purpose of the SELECT command?
01:33 6. Which command is used to add a new row to a table?
01:49 7. How do you modify existing data in a table?
02:06 8. Which command removes rows from a table based on a condition?
02:22 9. What does the COMMIT command do?
02:38 10. Which command reverts all changes made in the current transaction?
02:54 11. What is a SAVEPOINT used for in a transaction?
03:10 12. Which command grants user access privileges to database objects?
03:27 13. What does the REVOKE command do?
03:43 14. Which SQL function calculates the average value of a numeric column?
03:59 15. What does the COUNT function do?
04:16 16. Which function converts a string to uppercase in SQL?
04:32 17. Which join returns only matching rows from both tables?
04:48 18. Which join returns all rows from the left table and matching rows from the right table?
05:04 19. What is a subquery?
05:21 20. How do you delete a table and all its data?
05:37 21. Which command is used to add a new table to the database?
05:52 22. Which function removes leading and trailing spaces from a string?
06:10 23. Which SQL function calculates the sum of a numeric column?
06:26 24. Which join returns all rows from both tables when there is a match?
06:42 25. How do you create a savepoint in a transaction?
06:58 Thank You

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