從兩個表中選擇一個XML

Question

我想執行下列SQL：

SELECT * FROM Table2 
INNER JOIN 
    (SELECT * FROM Table1 
    INNER JOIN 
    (SELECT MAX(DateTime) AS LastMeasurement, MeasurementId as LastMeasurementId 
    FROM Table1 GROUP BY MeasurementId) as lastMeasurement 
    ON (Table1.MeasurementId = lastMeasurement.LastMeasurementId) 
    AND (Table1.DateTime = lastMeasurement.LastMeasurement)) as hLastMeasurement 
ON Table2.Id = hLastMeasurement.Id 
ORDER BY Table2.Id ASC 

這只是正常的，但因爲我想要得到的結果以XML格式，不得不投地理列，我已經改變了第一行：

SELECT Name, Description, CAST(Location as nvarchar(MAX)) FROM Table2 

，並添加此行到最後：

FOR XML RAW ('Object'), ROOT ('Objects'), ELEMENTS 

現在我剛開g XML，但只有來自Table2的數據。
任何建議將受到歡迎。

Answer 1

顯然，如果你想顯示其他表格的數據，那麼你必須選擇這樣的列。 IO通常使用MYSQL，所以這是我通常使用的方式。但是如果您使用的是oracle或其他數據庫，那麼您必須選擇適當的別名來顯示您希望的自定義​​列。請參見使用sql server的基本示例here

SELECT Table2.Name,Table2.Description,lastMeasurement.MeasurementId 

FROM Table2 t2 
    INNER JOIN 
     (SELECT * FROM Table1 
     INNER JOIN 
     (SELECT MAX(DateTime) AS LastMeasurement, MeasurementId as LastMeasurementId 
     FROM Table1 GROUP BY MeasurementId) as lastMeasurement 
     ON (Table1.MeasurementId = lastMeasurement.LastMeasurementId) 
     AND (Table1.DateTime = lastMeasurement.LastMeasurement)) as hLastMeasurement 
    ON Table2.Id = hLastMeasurement.Id 
    ORDER BY Table2.Id ASC