SQL select group query

Question

Below is my Table

Table1

+--------+----------+---------+  
| amount | make     | product |  
+--------+----------+---------+  
|    100 | Nokia    | Mo         


        

Answer 1

You can do it in two ways: 1) Add Row Index column that will reflect the order and then select all rows with Row <= 2

SELECT amount, make,product
FROM 
(SELECT  ROW_NUMBER() OVER (PARTITION BY [product] ORDER BY [amount] DESC) AS [RowID],*
FROM [dbo].[Table1]) RESULT
WHERE RowID <= 2

2) You can also join the table to itself

SELECT a1.* FROM Table1 AS a1
  LEFT JOIN Table1 AS a2 
    ON a1.product = a2.product AND a1.amount<= a2.amount
GROUP BY a1.product
HAVING COUNT(*) <= 2;