max for a segment

I have a table like this

NAME , SegDate, Segment

I need to select the records where the latest segdate per NAME is <> 'JK' but where they do have a segdate that is not in the past
vbnetcoderAsked:
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Pawan KumarDatabase ExpertCommented:
can you please provide few rows and expected output.
0
Pawan KumarDatabase ExpertCommented:
Please try this solution -

--

;WITH CTE AS
(
	select * , CASE WHEN Segment = 'jk' THEN 0 ELSE 
        ROW_NUMBER() OVER (PARTITION BY Name ORDER BY SegDate) END rt from Segments
)
SELECT u.NAME,u.SegDate,u.Segment
FROM 
(
	SELECT * , MAX(rt) OVER (PARTITION BY Name) rnk
	FROM CTE
)u WHERE rnk = rt

--

Open in new window


OR

99% the above one will work... below is just in case... if you dont want rows where you only have Segment = 'jk' and nothing else for a NAME.

;WITH CTE AS
(
	select * ,ROW_NUMBER() OVER (PARTITION BY Name ORDER BY SegDate)   
rt from Segments
	WHERE Segment <> 'jk' 
)
SELECT u.NAME,u.SegDate,u.Segment
FROM 
(
	SELECT * , MAX(rt) OVER (PARTITION BY Name) rnk
	FROM CTE
)u WHERE rnk = rt

Open in new window

0

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vbnetcoderAuthor Commented:
ty
0
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