W3Schools SQL Quiz

What is the most common type of join? INNER JOIN INSIDE JOIN JOINED JOINED TABLE

INNER JOIN

With SQL, how do you select all the columns from a table named "Persons"? SELECT *.Persons SELECT [all] FROM Persons SELECT * FROM Persons SELECT Persons

SELECT * FROM Persons

Which SQL statement is used to create a table in a database? CREATE TABLE CREATE DATABASE TABLE CREATE DB CREATE DATABASE TAB

CREATE TABLE

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

ORDER BY

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

SELECT FirstName FROM Persons

What does SQL stand for? Strong Question Language Structured Question Language Structured Query Language

Structured Query Language

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

True

Which operator is used to select values within a range? BETWEEN WITHIN RANGE

BETWEEN

With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table? INSERT INTO Persons ('Olsen') INTO LastName INSERT ('Olsen') INTO Persons (LastName) INSERT INTO Persons (LastName) VALUES ('Olsen')

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

Which SQL statement is used to update data in a database? SAVE AS SAVE MODIFY UPDATE

UPDATE

How can you change "Hansen" into "Nilsen" in the "LastName" column in the Persons table? MODIFY Persons SET LastName='Nilsen' WHERE LastName='Hansen' UPDATE Persons SET LastName='Nilsen' WHERE LastName='Hansen' MODIFY Persons SET LastName='Hansen' INTO LastName='Nilsen UPDATE Persons SET LastName='Hansen' INTO LastName='Nilsen'

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

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

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

Which SQL statement is used to insert new data in a database? ADD RECORD ADD NEW INSERT NEW INSERT INTO

INSERT INTO

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%' SELECT * FROM Persons WHERE FirstName='%a%' SELECT * FROM Persons WHERE FirstName LIKE '%a' SELECT * FROM Persons WHERE FirstName='a'

SELECT * FROM Persons WHERE FirstName LIKE 'a%'

With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table? DELETE FROM Persons WHERE FirstName = 'Peter' DELETE FirstName='Peter' FROM Persons DELETE ROW FirstName='Peter' FROM Persons

DELETE FROM Persons WHERE FirstName = 'Peter'

With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"? SELECT * FROM Persons SORT 'FirstName' DESC SELECT * FROM Persons ORDER FirstName DESC SELECT * FROM Persons ORDER BY FirstName DESC SELECT * FROM Persons SORT BY 'FirstName' DESC

SELECT * FROM Persons ORDER BY FirstName DESC

Which SQL statement is used to return only different values? SELECT UNIQUE SELECT DISTINCT SELECT DIFFERENT

SELECT DISTINCT

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 False

True

Which SQL statement is used to extract data from a database? SELECT EXTRACT GET OPEN

SELECT

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

DELETE

With SQL, how can you insert a new record into the "Persons" table? INSERT INTO Persons VALUES ('Jimmy', 'Jackson') INSERT ('Jimmy', 'Jackson') INTO Persons INSERT VALUES ('Jimmy', 'Jackson') INTO Persons

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

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

LIKE

With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" is "Peter"? SELECT [all] FROM Persons WHERE FirstName LIKE 'Peter' SELECT * FROM Persons WHERE FirstName='Peter' SELECT * FROM Persons WHERE FirstName<>'Peter' SELECT [all] FROM Persons WHERE FirstName='Peter'

SELECT * FROM Persons WHERE FirstName='Peter'

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

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 SELECT COLUMNS(*) FROM Persons SELECT LEN(*) FROM Persons SELECT NO(*) FROM Persons

SELECT COUNT(*) FROM Persons