Question

在SSRS 2005中处理查询。查询在数据视图中工作，但在预览中它会爆炸。这就是我所拥有的：

SELECT 
      TOP(cast(@N as integer))  
      Date, 
      StartItem, 
      MasterItem, 
      SubItem, 
      SubItemDescription, 
      Quantity, 
      NetQuantity, 
      UnitOfMeasure, 
      BomLevel, 
      Cost, 
      Cost * NetQuantity * (CASE WHEN a.Purch = 1 THEN 1 ELSE 0 END) AS TotalSumCost
 FROM         
      Bom AS a
 GROUP BY 
      Date, StartItem, MasterItem, SubItem, SubItemDescription, Quantity, NetQuantity,       UnitOfMeasure, BomLevel, Cost, 
                        Cost * NetQuantity * (CASE WHEN a.Purch = 1 THEN 1 ELSE 0 END)
 ORDER BY TotalSumCost DESC

我得到的错误是“查询参数'@N'的值表达式是指不存在的报表参数'N'。我的报表参数中有N个设置。请参见下图。

enter image description here

Answer 1

你必须将它命名为N，我看到RowsReturned。

此外，如果您稍后在该过程中定义了该参数，则会出现特别是在03和05（Visual Studio）中未获取该参数的情况。右键单击您的报告，然后在XML中选择“查看代码”查找参数部分并确保它在那里。它看起来像这样：

 <Query>
        <DataSourceName>dsTKExpenseReports</DataSourceName>
        <CommandType>StoredProcedure</CommandType>
        <CommandText>rptExpenseReportReasons</CommandText>
        <QueryParameters>
          <QueryParameter Name="@ExpenseReasonID">
            <Value>=Parameters!ExpenseReasonID.Value</Value>
          </QueryParameter>
          <QueryParameter Name="@Reimbursable">
            <Value>=Parameters!Reimbursable.Value</Value>
          </QueryParameter>
          <QueryParameter Name="@RequiresDesc">
            <Value>=Parameters!RequiresDesc.Value</Value>
          </QueryParameter>
        </QueryParameters>
      </Query>

请注意查询参数部分，确保您的项目包含Item和RowsReturned。并将参数名称更改为“N”或将SQL或存储过程更改为值“RowsReturned”。他们应该永远匹配。您的代码应如下所示：

SELECT 
      TOP(cast(@RowsReturned as integer))  
      Date, 
      StartItem, 
      MasterItem, 
      SubItem, 
      SubItemDescription, 
      Quantity, 
      NetQuantity, 
      UnitOfMeasure, 
      BomLevel, 
      Cost, 
      Cost * NetQuantity * (CASE WHEN a.Purch = 1 THEN 1 ELSE 0 END) AS TotalSumCost
 FROM         
      Bom AS a
 GROUP BY 
      Date, StartItem, MasterItem, SubItem, SubItemDescription, Quantity, NetQuantity,       UnitOfMeasure, BomLevel, Cost, 
                        Cost * NetQuantity * (CASE WHEN a.Purch = 1 THEN 1 ELSE 0 END)
 ORDER BY TotalSumCost DESC

顺便说一句，如果您使用GROUP BY子句不正确，则只需列出组中的所有列，即可获得预期结果。这可能会让你不顾一切。正确的方法是别名查询，然后是别名中的组......：

SELECT 
      n.Blah,
      a.Blah
FROM
      MyTable
INNER JOIN
 (
  SELECT...GROUP BY...
 ) n

SSRS给我一个错误，但在数据视图中工作

1 个答案: