将两个SQL Server查询连接到一个

在数据库中，查询是从两个表运行的，一个是live，另一个是archive，但是我需要将这两个表中的数据添加到一起，下面是一个查询示例

SELECT     SUM(SOPOrderReturnLine.LineTotalValue) AS Value, CONVERT(date, SOPOrderReturnLine.DateTimeCreated) 
                  AS Date
FROM         SOPOrderReturnLine AS SOPOrderReturnLine 
WHERE     (SOPOrderReturnLine.AnalysisCode1 LIKE 'angela%') AND (CONVERT(date, SOPOrderReturnLine.DateTimeCreated) > DATEADD(day, - 15, GETDATE()))
GROUP BY CONVERT(date, SOPOrderReturnLine.DateTimeCreated)
ORDER BY Date

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此查询汇总了live表中的数据，存档表的结构与此完全相同，但称为SOPORDERROUNTLINEARCH，将此合并到一个查询中的最佳方式是什么，因此，对于列，值将是该日期的两个表的总和，而不是现在的SOPOrderReturnLine。

使用UNION ALL组合这两个表，然后像以前一样执行其余操作：

SELECT     SUM(SOPOrderReturnLine.LineTotalValue) AS Value, CONVERT(date, SOPOrderReturnLine.DateTimeCreated) 
                  AS Date
FROM (SOPOrderReturnLine
      UNION ALL
      SOPOrderReturnLineArch
      ) AS SOPOrderReturnLine 
WHERE     (SOPOrderReturnLine.AnalysisCode1 LIKE 'angela%') AND (CONVERT(date, SOPOrderReturnLine.DateTimeCreated) > DATEADD(day, - 15, GETDATE()))
GROUP BY CONVERT(date, SOPOrderReturnLine.DateTimeCreated)
ORDER BY Date

或者结合两种结果：

SELECT     SUM(SOPOrderReturnLine.LineTotalValue) AS Value, CONVERT(date, SOPOrderReturnLine.DateTimeCreated) 
                  AS Date
FROM SOPOrderReturnLine 
WHERE     (SOPOrderReturnLine.AnalysisCode1 LIKE 'angela%') AND (CONVERT(date, SOPOrderReturnLine.DateTimeCreated) > DATEADD(day, - 15, GETDATE()))
GROUP BY CONVERT(date, SOPOrderReturnLine.DateTimeCreated)
UNION ALL
SELECT     SUM(SOPOrderReturnLine.LineTotalValue) AS Value, CONVERT(date, SOPOrderReturnLine.DateTimeCreated) 
                  AS Date
FROM SOPOrderReturnLineArc AS SOPOrderReturnLine 
WHERE     (SOPOrderReturnLine.AnalysisCode1 LIKE 'angela%') AND (CONVERT(date, SOPOrderReturnLine.DateTimeCreated) > DATEADD(day, - 15, GETDATE()))
GROUP BY CONVERT(date, SOPOrderReturnLine.DateTimeCreated)
ORDER BY Date

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汇总每个表中的结果，使用union all将它们汇总在一起，然后重新汇总：

SELECT date, SUM(VALUE) as total_value
FROM ((SELECT CONVERT(date, orl.DateTimeCreated) as date,
              SUM(orl.LineTotalValue) AS Value
       FROM SOPOrderReturnLine AS orl 
       WHERE orl.AnalysisCode1 LIKE 'angela%') AND
             (CONVERT(date, orl.DateTimeCreated) > DATEADD(day, - 15, GETDATE()))
       GROUP BY CONVERT(date, orl.DateTimeCreated)
      ) UNION ALL
      (SELECT CONVERT(date, orl.DateTimeCreated) as date,
              SUM(orl.LineTotalValue) AS Value
       FROM SOPOrderReturnLine_archive AS orl 
       WHERE orl.AnalysisCode1 LIKE 'angela%') AND
             (CONVERT(date, orl.DateTimeCreated) > DATEADD(day, - 15, GETDATE()))
       GROUP BY CONVERT(date, orl.DateTimeCreated)
      ) 
     ) x
GROUP BY date
ORDER BY Date;

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在联合之前进行聚合将为SQL Server提供更多的优化机会。这并不总是比仅在union all之后进行聚合快，但可能是这样。

使用此方法为每个日期创建了两行，如果我想将每个日期的值一起添加，我该怎么做？400.00 2015-01-15 1145.99 2015-01-15 1498.64 2015-01-16 764.50 2015-01-19 288.11 2015-01-19这是结果的一部分，所以对于第15天，我想将它们加在一起，依此类推，如果每天有多行耶，表的结构完全相同当我运行此操作时，我得到错误消息8120，级别16，状态1，第2行列“SOPOrderReturnLine.DateTimeCreated”在选择列表中无效，因为它未包含在聚合函数或GROUP BY子句中。