partitionBy.sql

-- When you need to find the submitted datetime of the second interaction submitted by each and every doc in our database
LEFT JOIN (
	SELECT *
	FROM (
		SELECT
		ROW_NUMBER() OVER(PARTITION BY [PhysicianID] ORDER BY [WhenSubmitted]) AS ROW,
			[PhysicianID],
			[WhenSubmitted] 
		FROM [dbo].[Recording] 
	) AS tmp 
	WHERE ROW = 2
) AS tmp2
ON tmp2.[PhysicianID]=dr.[UID]