Question

Below is my query that I am using:

SELECT 
   County,
   Code,
   Sum(PaidAmount) AS TotalPaid
FROM
   Counties
GROUP BY
   County,
   Code

It returns the set:

County     Code         TotalPaid
Brown      99           210.21
Lyon       73           322.22
Lyon       88           533.22
Lincoln    22           223.21

What I am looking for is a query that will return the rows that show the County and the Code for the Max TotalPaid for each County. An example of the result set that I need is shown below (notice that Lyon, 73 is removed since Lyon, 88 has a higher TotalPaid amount):

County     Code         TotalPaid
Brown      99           210.21
Lyon       88           533.22
Lincoln    22           223.21

Answer 1

I wasn’t able to test this, but RANK should solve this:

SELECT x.County, x.Code x.TotalPaid
    ,RANK() OVER 
    (PARTITION BY x.County ORDER BY x.TotalPaid DESC) AS 'RANK'
FROM

(SELECT 
   County,
   Code,
   Sum(PaidAmount) AS TotalPaid
FROM
   Counties
GROUP BY
   County,
   Code) x
WHERE Rank = 1