DENSE_RANK according to particular order

Question

Hi I have a table of data I want to output the dense_rank of the names starting from the first group of names according to sorted dates order. e.g.

DROP TABL         


        

Answer 1

First rank distinct names ordered by date and then join on the table:

;WITH cte AS(SELECT name, ROW_NUMBER() OVER(ORDER BY MIN(date)) rn 
             FROM dbo.MyTable 
             GROUP BY name)
SELECT c.rn, m.date, m.name
FROM cte c
JOIN dbo.MyTable m ON m.name = c.name
ORDER BY m.date