Sql query untuk menggabungkan/menyatukan dua tabel

Ini telah diuji di SQL Server 2008 R2. Saya percaya semuanya di sini akan bekerja pada tahun 2005 juga. 2005, sejauh yang saya ingat, antara lain memperkenalkan PIVOT dan OVER. Jika Anda menemukan masalah, beri tahu saya.

DECLARE @Products TABLE
(
    ID INT IDENTITY(1, 1)
    , Name VARCHAR(30)
);

INSERT INTO @Products
VALUES ('Dummies Guide to Querying'), ('SQL Design Patterns');

DECLARE @OldProducts TABLE
(
    ID INT IDENTITY(1, 1)
    , ProductID INT
    , Location CHAR(2)
    , HistoryDate DATE
    , Sales INT
);

INSERT INTO @OldProducts
VALUES (1, 'CO', '20100601', 100)
    , (1, 'CO', '20100701', 200)
    , (1, 'CA', '20100526', 150)
    , (2, 'CA', '20100601', 175);

DECLARE @NewProducts TABLE
(
    ID INT IDENTITY(1, 1)
    , ProductID INT
    , Location CHAR(2)
    , FutureDate DATE
    , PredictedSales INT
);

INSERT INTO @NewProducts
VALUES (1, 'CO', '20110401', 200)
    , (1, 'CO', '20110601', 250)
    , (1, 'CA', '20110401', 150)
    , (2, 'CA', '20110301', 180)
    , (3, 'WA', '20110301', 100);

WITH AllProduts AS
(
    SELECT
        Products.Name
        , OldProducts.Location
        , DATENAME(MONTH, OldProducts.HistoryDate) AS MonthValue
        , OldProducts.Sales
    FROM @OldProducts AS OldProducts
    INNER JOIN @Products AS Products
        ON Products.ID = OldProducts.ProductID

    UNION ALL

    SELECT
        Products.Name
        , NewProducts.Location
        , DATENAME(MONTH, NewProducts.FutureDate) AS MonthValue
        , NewProducts.PredictedSales AS Sales
    FROM @NewProducts AS NewProducts
    INNER JOIN @Products AS Products
        ON Products.ID = NewProducts.ProductID
)
SELECT
    Name
    , Location
    , [January]
    , [Febuary]
    , [March]
    , [April]
    , [May]
    , [June]
    , [July]
    , [August]
    , [September]
    , [October]
    , [November]
    , [December]
FROM AllProduts
PIVOT
(
    SUM(Sales)
    FOR MonthValue
    IN
    (
        [January]
        , [Febuary]
        , [March]
        , [April]
        , [May]
        , [June]
        , [July]
        , [August]
        , [September]
        , [October]
        , [November]
        , [December]
    )
) PivotedTable
ORDER BY Name, Location;