MAX_BY() and MIN_BY() with Window Function

Input Data

ORDER_NUMBER	SALES_ASSOCIATE	ORDER_AMOUNT
1	Chelsea	10
2	Chelsea	12
3	Chelsea	5
4	Chelsea	20
5	Chelsea	30
6	Anna	3
7	Anna	2
8	Anna	1
9	Anna	199
10	Anna	50
11	Anna	20

Query

select distinct
  sales_associate
  , max_by(order_amount, order_amount, 2) 
    over (partition by sales_associate) as top_2_sales_by_amount
  , min_by(order_amount, order_amount, 2)
    over (partition by sales_associate) as lowest_2_sales_by_amount
from orders;

Output

SALES_ASSOCIATE	TOP_2_SALES_BY_AMOUNT	LOWEST_2_SALES_BY_AMOUNT
Chelsea	[ 30, 20 ]	[ 5, 10 ]
Anna	[ 199, 50 ]	[ 1, 2 ]