Question

I have two tables: Users and Files.

Users table has 10 rows, Files table has 450 rows which has a column for user ID’s (UserID).

I want to query list of all People and files they last downloaded. Files table has LastDownloadTime field which is of type DateTime.

This is my SQL query;

Select
    Users.Name , Files.Name
FROM Users
RIGHT OUTER JOIN Files on Users.ID = (
    Select Files.UserID
    FROM Files
    ORDER BY LastDownloadTime DESC Limit 1
)

Above query returns all Users and Files. What should be the right query for this?

Answer 1

You could do this:

Select
    u.Name,
    (Select f.Name from Files f where u.ID = f.ID order by LastDownloadDate LIMIT 1)
FROM Users u