Question

I have two table users and album. In users table there is user_id primary key .In other table albums there are multiple rows with that user_id because every time when a user upload a new album it uploads with user_id as foreign key. I want to select only once the user_id with other table(album) ignore other result set.

How can I achieve this?

Answer 1

SELECT  a.*, b.*
FROM    users a
        INNER JOIN album b
            ON a.user_ID = b.user_ID
        INNER JOIN
        (
            SELECT user_ID, MAX(photo_id) max_rec
            FROM album
            GROUP BY    user_ID
        ) c ON b.user_ID = c.user_ID AND
                b.photo_id = c.max_rec