Question

I am trying to sort data from different tables by its time..
I have tables:

books:
book_id | book_name | book_time

movies:
movie_id | movie_name | movie_time

And I want to select the latest books and movies together. I would like to sort it like: ORDER BY book_time DESC
But for both tables. I tried it with joins but it wasn’t very good and it was slow too.

Answer 1

I usually try to stay away from subqueries, but if you put the union into one, you can easily order by time:

SELECT id, name, time
FROM
(
    SELECT book_id id, book_name name, book_time time FROM books
    UNION
    SELECT movie_id id, movie_name name, movie_time time FROM movies
) booksandmovies
ORDER BY time DESC;