HiI am trying to calculate the results of two Sub-Queries (if they are called something completely different, please let me know as I am relatively new to SQL).Basically, as you will see from my code below, I want to be able to display the total value of [STCV] - [STPV] + [STPAV] AS [STV] as well as the original alias values in the same query results.Any ideas would be greatly appreciated as I have been banging my head off of a brick wall for the last two weeks!SELECT pa_Branch.br_ID AS [Branch ID],pa_Branch.br_desc AS [Branch Name],pa_Healthboard.hb_desc AS [Healthboard Name],pa_Organisation.nh_homename AS [Organisation Name],pa_Sites.si_desc AS [Site Name],pa_EyeTest.ey_id AS [Test ID],pa_EyeTest.ey_testdate AS [Test Date],pa_optician.op_FirstName + ',' + pa_optician.op_LastName + '/' + pa_Dispenser.di_FirstName + ',' + pa_Dispenser.di_LastName AS [Test Team],pa_Patients.pa_LastName + ',' + pa_Patients.pa_FirstName AS [Patient Name] ,(SELECT ISNULL(SUM(pa_STClaimCode.cc_value),0) FROM pa_STClaim INNER JOIN pa_STClaimCode ON pa_STClaim.sc_ccid = pa_STClaimCode.cc_id WHERE (pa_STClaim.sc_eyid = pa_EyeTest.ey_id) AND (pa_STClaim.disabled = 0)) AS [STCV] ,(SELECT ISNULL (SUM(pa_STPayment.sp_payment),0) FROM pa_STClaim INNER JOIN pa_STPayment ON pa_STClaim.sc_id = pa_STPayment.sp_scid WHERE (pa_STPayment.sp_scid = pa_STClaim.sc_id) AND (pa_STClaim.sc_eyid = pa_EyeTest.ey_id)) AS [STPV] ,(SELECT ISNULL(SUM(pa_STPaymentAdjustment.sj_payment),0) FROM pa_STPaymentAdjustment WHERE (pa_STPaymentAdjustment.disabled = 0) AND (pa_STPaymentAdjustment.sj_eyid = pa_EyeTest.ey_id)) AS [STPAV]FROMpa_EyeTestINNER JOIN pa_sites ON pa_EyeTest.ey_siid = pa_Sites.si_idINNER JOIN pa_patients ON pa_EyeTest.ey_paid = pa_patients.pa_idINNER JOIN pa_organisation ON pa_sites.si_nhid = pa_Organisation.nh_idINNER JOIN pa_Healthboard ON pa_Organisation.nh_HealthboardID = pa_Healthboard.hb_idINNER JOIN pa_Branch ON pa_Organisation.nh_branchID = pa_Branch.br_idINNER JOIN pa_organisationType ON pa_Organisation.nh_organisationType = pa_OrganisationType.ot_idINNER JOIN pa_Optician ON pa_EyeTest.ey_optician = pa_Optician.op_idINNER JOIN pa_Dispenser ON pa_EyeTest.ey_dispenser = pa_Dispenser.di_idWHERE(pa_EyeTest.disabled = 0 AND pa_EyeTest.ey_testdate between '2001-01-01' and '2011-01-01' AND pa_OrganisationType.ot_BusinessType = 1)GROUP BYpa_Branch.br_ID,pa_Branch.br_desc,pa_Healthboard.hb_desc,pa_Organisation.nh_homename,pa_Sites.si_desc,pa_EyeTest.ey_id,pa_EyeTest.ey_testdate,pa_optician.op_FirstName + ',' + pa_optician.op_LastName + '/' + pa_Dispenser.di_FirstName + ',' + pa_Dispenser.di_LastName ,pa_Patients.pa_LastName + ',' + pa_Patients.pa_FirstNameORDER BY[Branch Name],[Test ID],[Healthboard Name],[Organisation Name],[Site Name],[Patient Name]