SELECT     a.tDate, a.tTime, MAX(ISNULL(b.Object_1, 0)) AS Dist1, MAX(ISNULL(b.Object_1, 0)) AS Dist2, MAX(ISNULL(b.Object_3, 0)) AS Dist3
FROM         dbo.tblTimes AS a INNER JOIN
                      dbo.tblObjects AS b ON a.TimeID = b.TimeID INNER JOIN
                      dbo.tblDurations AS c ON b.DurationID = c.DurationID
GROUP BY a.tDate, CONVERT(time, a.tTime)

Select all