SQL

distinct For only one column

SELECT *
  FROM (
                SELECT  ID, 
                        Email, 
                        ProductName, 
                        ProductModel,
                        ROW_NUMBER() OVER(PARTITION BY Email ORDER BY ID DESC) rn
                    FROM Products
              ) a
WHERE rn = 1

choose only one for each distinct collumn regardless of other columns

WITH cte AS
(   SELECT *, ROW_NUMBER() OVER (PARTITION BY id ORDER BY val1 DESC) AS rn
    FROM MyTable
)
SELECT *
FROM cte
WHERE rn = 1

select other columns with distinct

SELECT * FROM table
WHERE id IN (
  SELECT MAX(id) FROM table GROUP BY name
)