从两个表中选择一个XML

Question

我想执行下列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 

这只是正常的，但因为我想要得到的结果以XML格式，不得不投地理列，我已经改变了第一行：

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

，并添加此行到最后：

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

现在我刚开g XML，但只有来自Table2的数据。
任何建议将受到欢迎。

Answer 1

显然，如果你想显示其他表格的数据，那么你必须选择这样的列。 IO通常使用MYSQL，所以这是我通常使用的方式。但是如果您使用的是oracle或其他数据库，那么您必须选择适当的别名来显示您希望的自定义​​列。请参见使用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