3 месяца Подвижность Среднее

Question

Мне нужна помощь, рассчитывающая среднюю стоимость прокатки 3 месяца из двух наборов данных ниже. Который составляет 3 месяца Среднее от набора данных1/Набор данных 2. Я не уверен, что использование cte - правильный маршрут. Любое понимание очень ценится.

Dataset 1: 

     SELECT(factAdmissions.ContractCode + '-' +factAdmissions.BenefitPlanCode) AS [Contract Code], 
     factAdmissions.AdmitCCYYMM, 
     ISNULL(sum(AmountPaid),0)As [Amount Paid] 
     FROM factAdmissions 

     WHERE factAdmissions.AdmitCCYYMM >='200701' 
     AND factAdmissions.AcuteSNFIndAdmit ='a' 
     AND factAdmissions.ContractCode Is Not Null 
     AND factAdmissions.BenefitPlanCode Is Not Null 
     AND BusinessUnitCode In('EP','HF', 'VN') 
     AND AdmitCCYYMM BETWEEN (@StartDate) AND (@EndDate) 

     AND factAdmissions.ContractCode + '-' +factAdmissions.BenefitPlanCode IN (@Product) 

     Group by factAdmissions.ContractCode, 
     factAdmissions.BenefitPlanCode, 
     factAdmissions.AdmitCCYYMM 
     Order by factAdmissions.ContractCode, 
     factAdmissions.BenefitPlanCode, 
     factAdmissions.AdmitCCYYMM; 



     Dataset2: 

     Select 

     (factMembership.ContractCode+'-'+ factMembership.BenefitPlanCode) As Product, 
     EffectiveCCYYMM, 
     ISNULL(count(Distinct MemberId),0) As MemberCount 
     From factMembership 
     Where EffectiveCCYYMM >= '200701' 
     AND BusinessUnitCode In('EP','HF', 'VN') 
     AND EffectiveCCYYMM BETWEEN (@StartDate) AND (@EndDate) 

     AND factMembership.ContractCode + '-' +factMembership.BenefitPlanCode IN (@Product) 


     Group by 
     ContractCode, 
     BenefitPlanCode, 
     EffectiveCCYYMM 

     Order by 1; 

    Dataset 1: Output 201101 201102 201103 
    Cost $420,627 $73,608 $93,792 


    Dataset 2:Output 201103 
    Memberscount 400 



    Desired Output: 201103 
    3 Month Rolling Average $490.02 

Answer 1

DECLARE @Admission TABLE (
    Code VARCHAR(100), 
    YearMonth CHAR(6), 
    TotalPaid DECIMAL 
) 

DECLARE @Membership TABLE (
    Code VARCHAR(100), 
    YearMonth CHAR(6), 
    TotalMembers int 
) 

INSERT @Admission (Code, YearMonth, TotalPaid) VALUES 
('123', '201301', 10), 
('xyz', '201301', 20), 
('123', '201302', 15), 
('xyz', '201302', 15), 
('123', '201303', 30), 
('xyz', '201303', 40), 
('123', '201304', 30), 
('xyz', '201304', 40), 
('123', '201305', 15), 
('xyz', '201305', 15), 
('123', '201306', 20), 
('xyz', '201306', 10) 

INSERT @Membership (Code, YearMonth, TotalMembers) VALUES 
('123', '201301', 1), 
('xyz', '201301', 2), 
('123', '201302', 1), 
('xyz', '201302', 3), 
('123', '201303', 3), 
('xyz', '201303', 5), 
('123', '201304', 3), 
('xyz', '201304', 5), 
('123', '201305', 1), 
('xyz', '201305', 3), 
('123', '201306', 1), 
('xyz', '201306', 2) 


SELECT 
    a.Code, 
    a.YearMonth, 
    TotalPaid, 
    TotalMembers, 
    TotalPaid/CAST(TotalMembers AS FLOAT) CostPerMember, 
    CAST(a.YearMonth + '01' AS date) AS ProperDate 
INTO #Values 
FROM @Admission a 
    INNER JOIN @Membership m ON a.Code = m.Code AND a.YearMonth = m.YearMonth 

SELECT 
    main.Code, 
    main.YearMonth, 
    main.TotalPaid, 
    main.TotalMembers, 
    COUNT(*) AS PointsToAverage, 
    SUM(sub.TotalPaid) AS TotalPaidOverPeriod, 
    SUM(sub.TotalMembers) AS TotalMembersOverPeriod, 
    SUM(sub.CostPerMember) AS TotalCostPerMemberOverPeriod, 
    ROUND(SUM(sub.TotalPaid)/CAST(COUNT(*) AS FLOAT), 2) AS RollingAverageTotalPaid, 
    ROUND(SUM(sub.TotalMembers)/CAST(COUNT(*) AS FLOAT), 2) AS RollingAverageTotalMembers, 
    ROUND(SUM(sub.CostPerMember)/CAST(COUNT(*) AS FLOAT), 2) AS RollingAverageCostPerMember 
FROM 
    #Values main 
    INNER JOIN #Values sub ON main.Code = sub.Code 
     AND sub.ProperDate BETWEEN DATEADD(month, -2.9, main.ProperDate) AND main.ProperDate 
GROUP BY 
    main.Code, 
    main.YearMonth, 
    main.TotalPaid, 
    main.TotalMembers