Module 3
1./Using a subquery, find the names of all the tracks for the album “Californication”./
SELECT Name
FROM Tracks
WHERE AlbumId IN (SELECT AlbumId
FROM Albums WHERE Title = “Californication”)
2./Find the total number of invoices for each customer along with the customer’s full name, city and email/
SELECT SUM(i.InvoiceID) AS totalnumber, c.FirstName, c.LastName, c.Email
From Invoices i INNER JOIN Customers c
ON i.CustomerID = c.CustomerID
GROUP BY c.CustomerID
3./Retrieve the track name, album, artistID, and trackID for all the albums./
SELECT t.Name, t.TrackId, a.Title, a.ArtistId
From Albums a LEFT JOIN Tracks t
ON a.AlbumId = t.AlbumId
/Retrieve a list with the managers last name, and the last name of the employees who report to him or her/
SELECT M.LastName AS Manager,
E.LastName AS Employee
FROM Employees E, Employees M
WHERE E.ReportsTo = M.EmployeeID
5./Find the name and ID of the artists who do not have albums./
SELECT Name,
a.ArtistId,
b.Title
FROM Artists a
LEFT JOIN Albums b
ON a.ArtistId = b.ArtistId
WHERE b.Title IS NULL
/Use a UNION to create a list of all the employee’s and customer’s first names and last names ordered by the last name in descending order./
SELECT FirstName, LastName
FROM Employees
UNION
SELECT FirstName, LastName
FROM Customers
ORDER BY LastName DESC