W3SCHOOLS SQL QUIZ

Which operator is used to select values within a range?

BETWEEN

Which SQL statement is used to create a table in a database?

CREATE TABLE

Which SQL statement is used to delete data from a database?

DELETE

With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table?

DELETE FROM Persons WHERE FirstName = 'Peter'

What is the most common type of join?

INNER JOIN

Which SQL statement is used to insert new data in a database?

INSERT INTO

With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table?

INSERT INTO Persons (LastName) VALUES ('Olsen')

With SQL, how can you insert a new record into the "Persons" table?

INSERT INTO Persons VALUES ('Jimmy', 'Jackson')

Which operator is used to search for a specified pattern in a column?

LIKE

Which SQL keyword is used to sort the result-set?

ORDER BY

Which SQL statement is used to extract data from a database?

SELECT

With SQL, how do you select all the columns from a table named "Persons"?

SELECT * FROM Persons

With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"?

SELECT * FROM Persons ORDER BY FirstName DESC

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"?

SELECT * FROM Persons WHERE FirstName LIKE 'a%'

With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" is "Peter"?

SELECT * FROM Persons WHERE FirstName='Peter'

With SQL, how do you select all the records from a table named "Persons" where the "FirstName" is "Peter" and the "LastName" is "Jackson"?

SELECT * FROM Persons WHERE FirstName='Peter' AND LastName='Jackson'

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"?

SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND 'Pettersen'

With SQL, how can you return the number of records in the "Persons" table?

SELECT COUNT(*) FROM Persons

Which SQL statement is used to return only different values?

SELECT DISTINCT

With SQL, how do you select a column named "FirstName" from a table named "Persons"?

SELECT FirstName FROM Persons

What does SQL stand for?

Structured Query Language

The NOT NULL constraint enforces a column to not accept null values.

True

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

True

Which SQL statement is used to update data in a database?

UPDATE

How can you change "Hansen" into "Nilsen" in the "LastName" column in the Persons table?

UPDATE Persons SET LastName = 'Nilsen' WHERE LastName = 'Hansen'