Laravel - Get the last entry of each UID type

Question

I have a table that has 100\'s of entries for over 1000 different products, each identified by a unique UID.

ID  UID                 MANY COLUMNS    CREATED          


        

Answer 1

This is easy enough to handle in MySQL:

SELECT t1.*
FROM yourTable t1
INNER JOIN
(
    SELECT UID, MAX(created_at) AS max_created_at
    FROM yourTable
    GROUP BY UID
) t2
    ON t1.UID        = t2.UID AND
       t1.created_at = t2.max_created_at;

Translating this over to Eloquent would be some work, but hopefully this gives you a good starting point.

Edit: You may want to use a LEFT JOIN if you expect that created_at could ever be NULL and that a given UID might only have null created values.