I have my table data as follows
 EMPID
  | FedTaxID
   | TaxType
   | Amount
   | 
1059
   | 888888888
   | TX02
   | 2000
   | 
1059
   | 888888888
   | TX02
   | 1000
   | 
1059
   | 888888888
   | TX03
   | 2000
   | 
I write a query to sum up the amount as follows
select SUM(Amount)
FROM
   tblTest
WHERE
   FedTaxID = '888888888'
   AND
   TaxTypeCode IN ('TX02', 'TX03')
But what i need is if TX03 exists 1 in the table i would like to add the amount multiple times means if i sum the total i will get 5000 but i would like to get 7000. If TX03 exists 1 time in the table i would like to add multiple times any idea please