SQL Server接続87行の

Question

クエリ1件の結果：340万行の

SELECT   
    MIN(LEFT(Date_Last_Updated, 4)) AS Year_of_Transfer, 
    MIN(RIGHT(LEFT(Date_Last_Updated, 6), 2)) AS Month_of_Transfer, 
    MIN(RIGHT(LEFT(Date_Last_Updated, 8), 2)) AS Day_of_Transfer, 
    CRS, Loan_Code, 
    MIN(Date_Last_Updated) AS Min_Date_Last_Updated 
FROM    
    dbo.Transfer_Final_Accounts_CO_SH 
WHERE   
    (LEFT(Date_Last_Updated, 4) >= '2016') 
    AND (Subcategory = 'Transfer to Workout') 
GROUP BY 
    CRS, Loan_Code 
ORDER BY 
    Loan_Code 

クエリ検索結果：

SELECT   
    Date_Last_Updated, 
    SUM(NPL_Amount_Last_Quarter) AS NPL_Amount_Last_Quarter, 
    Loan_Code, 
    SUM([Total_Balance_€]) AS Total_Balance, 
    SUM(On_Balance_Amount_Last_Quarter) AS On_Balance_Last_Q, 
    SUM([Off_Balance_Amount_€]) AS Off_Balance_Last_Q, CRS, 
    [On_Balance_Amount_€], [Off_Balance_Amount_€], [Total_Balance_€], 
    NPL_Amount_Last_Quarter AS NPL_Amount_Last_Q, 
    [NPL_Amount_€], On_Balance_Amount_Last_Quarter, 
    Material_Bucket, Material_Bucket_Last_Quarter 
FROM 
    dbo.Transfer_Final_Accounts_COM_WORK 
GROUP BY 
    CRS, Date_Last_Updated, Loan_Code, [On_Balance_Amount_€], 
    [Off_Balance_Amount_€], [Total_Balance_€], NPL_Amount_Last_Quarter, 
    [NPL_Amount_€], On_Balance_Amount_Last_Quarter, Material_Bucket, 
    Material_Bucket_Last_Quarter 

クエリ3は2の上方及び0の行の結果を結ぶ：

SELECT   
    dbo.Transfer_to_Workout_Total_Balances.Total_Balance, 
    dbo.Transfer_to_Workout_Total_Balances.On_Balance_Last_Q, 
    dbo.Transfer_to_Workout_Total_Balances.Off_Balance_Last_Q,  
    dbo.Transfer_to_Workout_Total_Balances.NPL_Amount_Last_Quarter, 
    dbo.Transfer_to_workout_min_dates.Year_of_Transfer, 
    dbo.Transfer_to_workout_min_dates.Month_of_Transfer, 
    dbo.Transfer_to_workout_min_dates.Day_of_Transfer, 
    dbo.Transfer_to_workout_min_dates.CRS AS Expr1, 
    dbo.Transfer_to_workout_min_dates.Loan_Code AS Expr2, 
    dbo.Transfer_to_workout_min_dates.Min_Date_Last_Updated, 
    dbo.Transfer_to_Workout_Total_Balances.[On_Balance_Amount_€], 
    dbo.Transfer_to_Workout_Total_Balances.[Off_Balance_Amount_€], 
    dbo.Transfer_to_Workout_Total_Balances.[Total_Balance_€], 
    dbo.Transfer_to_Workout_Total_Balances.[NPL_Amount_€], 
    dbo.Transfer_to_Workout_Total_Balances.NPL_Amount_Last_Q, 
    dbo.Transfer_to_Workout_Total_Balances.On_Balance_Amount_Last_Quarter, 
    dbo.Transfer_to_Workout_Total_Balances.Material_Bucket, 
    dbo.Transfer_to_Workout_Total_Balances.Material_Bucket_Last_Quarter 
FROM 
    dbo.Transfer_to_workout_min_dates 
INNER JOIN 
    dbo.Transfer_to_Workout_Total_Balances ON dbo.Transfer_to_workout_min_dates.Loan_Code = dbo.Transfer_to_Workout_Total_Balances.Loan_Code 
        AND dbo.Transfer_to_workout_min_dates.Min_Date_Last_Updated = dbo.Transfer_to_Workout_Total_Balances.Date_Last_Updated 

なぜ私は上記の結果をとらないのですか？

Answer 1

クエリ3が行を返しませんが、アンダーレイテーブルdbo.Transfer_to_workout_min_datesおよびdbo.Transfer_to_Workout_Total_Balancesにデータが含まれている場合、これらのテーブルのエントリでは、ほとんどの場合、結合条件（ON）が満たされません。

用語の1つを削除してみてください（私はMin_Date_Last_Updatedで始まります）。それは何かを変えるべきです。次に、両方のフィールドの結果をチェックインします。彼らは異なっているので、決して平等ではありません。