SQL most recent using row_number() over partition

You should be able to move your query to a subquery and add where criteria:

SELECT user_id, page_name, recent_click
FROM (
  SELECT user_id,
         page_name,
         row_number() over (partition by session_id order by ts desc) as recent_click
  from clicks_data
) T
WHERE recent_click = 1

You should move the row_number() function into a subquery and then filter it in the outer query.
Something like this:

SELECT * FROM (
    SELECT
         [user_id]
        ,[page_name]
        ,ROW_NUMBER() OVER (PARTITION BY [session_id] 
                            ORDER BY [ts] DESC) AS [recent_click]
    FROM [clicks_data]
)x 
WHERE [recent_click] = 1

Tags:

Sql

Hive

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