SQL QUIZ

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

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

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

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

CREATE TABLE

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

DELETE FROM Persons WHERE FirstName='Peter'

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 specified pattern in a column?

LIKE

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

ORDER BY

with SQL, how do you select all the columns form 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 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 "LastName" is alphabetically between (and including) "Hansen" and "Pettersen"?

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

what is the most common type of join?

INNER JOIN?

which operator is used to select values within a range?

BETWEEN

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 or false?

TRUE

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 a column named "FirstName" from a table named "Persons"?

SELECT FirstName FROM Persons

the NOT NULL constraint enforces a column to not accept NULL values. true or false?

false