Something like this?
SELECT TOP 4
g.GalleryID
,g.GalleryTitle
,g.GalleryDate
,MAX(m.MediaThumb) AS MaxMediaThumb
FROM Galleries g
INNER JOIN Media m
ON g.GalleryID = m.GalleryID
GROUP BY g.GalleryID, g.GalleryTitle, g.GalleryDate
3
solved How can I select 4 distinct values from 2 tables containing many rows of data in SQL Server?