Sql server 使用案例选择-将结果合并到单个记录中

我有一个问题如下

SELECT        
FGB.TEMPLATE_DETAILS_REF, FGB.TEMPLATE_STRUCTURE_REF, FGB.DFEE_ELEMENT, 
    CASE 
    WHEN Condition = 'A' THEN SUM(FGS.Weighted) END AS CondA, 
    CASE 
    WHEN Condition = 'B' THEN SUM(FGS.Weighted) END AS CondB, 
    CASE 
    WHEN Condition = 'C' THEN SUM(FGS.Weighted) END AS CondC, 
    CASE 
    WHEN Condition = 'D' THEN SUM(FGS.Weighted) END AS CondD
    FROM            FGBlockSummary AS FGB INNER JOIN
                             FGSurveyItem AS FGS ON FGB.TEMPLATE_DETAILS_REF = FGS.TEMPLATE_DETAILS_REF AND FGB.TEMPLATE_STRUCTURE_REF = FGS.TEMPLATE_STRUCTURE_REF AND 
                             FGB.DFEE_ELEMENT = FGS.DFEE_ELEMENT
    GROUP BY FGB.TEMPLATE_DETAILS_REF, FGB.TEMPLATE_STRUCTURE_REF, FGB.DFEE_ELEMENT, FGS.Condition

其结果如下：

16 109天花板零14101.47零零零

16 109上限无效无效227.68无效

如何将结果合并成一行

16 109天花板空14101.47 227.68空

---

谢谢这就是你要找的吗

我将

SUM

移到

病例

s之外，并通过从

组中消除
FGS.Condition
。它会产生将
NULL
值更改为“0”的副作用，但这可能是可以容忍的

SELECT
  FGB.TEMPLATE_DETAILS_REF
 ,FGB.TEMPLATE_STRUCTURE_REF
 ,FGB.DFEE_ELEMENT
 ,CondA = SUM( 
          CASE
            WHEN FGS.Condition = 'A' THEN FGS.Weighted
            ELSE 0
          END)
 ,CondB = SUM( 
          CASE
            WHEN FGS.Condition = 'B' THEN FGS.Weighted
            ELSE 0
          END)
 ,CondC = SUM( 
          CASE
            WHEN FGS.Condition = 'C' THEN FGS.Weighted
            ELSE 0
          END)
 ,CondD = SUM( 
          CASE
            WHEN FGS.Condition = 'D' THEN FGS.Weighted
            ELSE 0
          END)
FROM
  FGBlockSummary AS FGB
INNER JOIN
  FGSurveyItem   AS FGS
    ON
    FGB.TEMPLATE_DETAILS_REF = FGS.TEMPLATE_DETAILS_REF
      AND FGB.TEMPLATE_STRUCTURE_REF = FGS.TEMPLATE_STRUCTURE_REF
      AND FGB.DFEE_ELEMENT = FGS.DFEE_ELEMENT
GROUP BY
  FGB.TEMPLATE_DETAILS_REF
 ,FGB.TEMPLATE_STRUCTURE_REF
 ,FGB.DFEE_ELEMENT;

你没有给我们一个很好的例子，当两个字段相同但值不同时会发生什么，它将如何决定？目前，您向我们展示的是，如果它们是相同的，请保留或选择不为空的记录。每个实体最多有4条记录，这取决于“条件”为“a”、“B”、“C”或“D”。我想做的是将与每个“条件”值关联的值合并到一个结果记录中。完美的感谢和零而不是空值也很有用。头号人物！