W3Schools SQL Quiz W3Schools SQL Quiz SQL QUIZPoints: 25 out of 25 1. What does SQL stand for? You answered: Structured Query Language Correct Answer! 2. Which SQL statement is used to extract data from a database? You answered: SELECT Correct Answer! 3. Which SQL statement is used to update data in a database? You answered: UPDATE Correct Answer! 4. Which SQL statement is used to delete data from a database? You answered: DELETE Correct Answer! 5. Which SQL statement is used to insert new data in a database? You answered: INSERT INTO Correct Answer! 6. With SQL, how do you select a column named "FirstName" from a table named "Persons"? You answered: SELECT FirstName FROM Persons Correct Answer! 7. With SQL, how do you select all the columns from a table named "Persons"? You answered: SELECT * FROM Persons Correct Answer! 8. With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" is "Peter"? You answered: SELECT * FROM Persons WHERE FirstName='Peter' Correct Answer! 9. With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" starts with an "a"? You answered: SELECT * FROM Persons WHERE FirstName LIKE 'a%' Correct Answer! 10. The OR operator displays a record if ANY conditions listed are true. The AND operator displays a record if ALL of the conditions listed are true You answered: True Correct Answer! 11. With SQL, how do you select all the records from a table named "Persons" where the "FirstName" is "Peter" and the "LastName" is "Jackson"? You answered: SELECT * FROM Persons WHERE FirstName='Peter' AND LastName='Jackson' Correct Answer! 12. With SQL, how do you select all the records from a table named "Persons" where the "LastName" is alphabetically between (and including) "Hansen" and "Pettersen"? You answered: SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND 'Pettersen' Correct Answer! 13. Which SQL statement is used to return only different values? You answered: SELECT DISTINCT Correct Answer! 14. Which SQL keyword is used to sort the result-set? You answered: ORDER BY Correct Answer! 15. With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"? You answered: SELECT * FROM Persons ORDER BY FirstName DESC Correct Answer! 16. With SQL, how can you insert a new record into the "Persons" table? You answered: INSERT INTO Persons VALUES ('Jimmy', 'Jackson') Correct Answer! 17. With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table? You answered: INSERT INTO Persons (LastName) VALUES ('Olsen') Correct Answer! 18. How can you change "Hansen" into "Nilsen" in the "LastName" column in the Persons table? You answered: UPDATE Persons SET LastName='Nilsen' WHERE LastName='Hansen' Correct Answer! 19. With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table? You answered: DELETE FROM Persons WHERE FirstName = 'Peter' Correct Answer! 20. With SQL, how can you return the number of records in the "Persons" table? You answered: SELECT COUNT(*) FROM Persons Correct Answer! 21. What is the most common type of join? You answered: INNER JOIN Correct Answer! 22. Which operator is used to select values within a range? You answered: BETWEEN Correct Answer! 23. The NOT NULL constraint enforces a column to not accept null values. You answered: True Correct Answer! 24. Which operator is used to search for a specified pattern in a column? You answered: LIKE Correct Answer! 25. Which SQL statement is used to create a table in a database? You answered: CREATE TABLE Correct Answer!