SQL查詢替換UNION ALL與加入或東西

Question

現在我有3個表

訂單：

ID |日期|機器|規劃

GoodPieces：

ID |日期|機器|件| |產品

BadPieces：

ID |日期|機器|件| |產品|組件

查詢的輸出是

日期|機器|計劃| GoodPieces | BadPieces

的實際查詢是類似的東西：

SELECT 
    data.Date AS Date, 
    data.Machine AS Machine, 
    SUM(CASE WHEN data.type = 'Planning' THEN data.value END) AS Planning, 
    SUM(CASE WHEN data.type = 'GoodPieces' THEN data.value END) AS GoodPieces, 
    SUM(CASE WHEN data.type = 'BadPieces' THEN data.value END) AS BadPieces 
FROM 
     (SELECT 
      'Planning' AS Type, 
      Date AS Date, 
      Machine AS Machine, 
      Planning AS Value 
     FROM Orders 
     UNION ALL 
     SELECT 
      'GoodPieces', 
      Date, 
      Machine, 
      Pieces AS Value 
     FROM GoodPieces 
     UNION ALL 
     SELECT 
      'BadPieces' 
      Date, 
      Machine, 
      Pieces AS Value 
     FROM BadPieces) AS data 
GROUP BY 
    Date, 
    Machine 

我的問題，如果是有沒有辦法讓這個3個表

訂單相同的輸出：

ID |日期|機|規劃

GoodPieces：

的OrderID |件| |產品

BadPieces：

的OrderID |件| |產品|組件

感謝，

Answer 1

當然，只是在表中LEFT JOIN，總結相應的列：

SELECT 
    O.Date, 
    O.Machine, 
    SUM(COALESCE(O.Planning, 0)) AS Planning, 
    SUM(COALESCE(G.Pieces, 0)) AS GoodPieces, 
    SUM(COALESCE(B.Pieces, 0)) AS BadPieces 
FROM 
    Orders O 
LEFT JOIN 
    (SELECT G.OrderID, 
    SUM(COALESCE(G.Pieces, 0)) AS GoodPieces 
    FROM GoodPieces G 
    GROUP BY G.OrderID) G ON G.OrderID = O.ID 
LEFT JOIN 
    (SELECT B.OrderID, 
    SUM(COALESCE(B.Pieces, 0)) AS BadPieces 
    FROM BadPieces B 
    GROUP BY B.OrderID) B ON B.OrderID = O.ID 
GROUP BY 
    O.Date, 
    O.Machine; 

演示：http://www.sqlfiddle.com/#!3/09a73/17

編輯：更新到處理點由下式給出@MikaelEriksson的評論。