CREATE VIEW FeedView AS
SELECT Id, [Type] = 1, DateCreated
FROM NewsBlog

UNION ALL

SELECT Id, [Type] = 2, DatePublished AS DateCreated
FROM NewsReport

UserFeedView Table
FeedViewId, UserId

SELECT TOP 20 FV.*, UFV.UserId
FROM FeedView FV
    LEFT OUTER JOIN UserFeedView UFV ON UFV.FeedViewId = FV.Id
WHERE UFV.UserId IS NULL OR UFV.UserId = '3D976E26-F9C9-4470-9CD7-DD9A79F29514'
ORDER BY FV.DateCreated DESC