SQL错误 - 无法绑定多部分标识符

Question

我试图以格式

获取数据的水平输出

查询是：

SELECT RDT1.County_Name
      ,RDT1.DistributionNumber as Dist_No
      ,RDT1.Vac_Allocated
      ,RDT1.Priority,RDT2.DistributionNumber as Dist_No
      ,RDT2.Vac_Allocated as Vac_Allocated
      ,RDT3.DistributionNumber as Dist_No
      ,RDT3.Vac_Allocated as Vac_Allocated 
FROM Result_Distribution_Table AS RDT1
    ,Result_Distribution_Table AS RDT2
    ,Result_Distribution_Table AS RDT3 
WHERE RDT1.County_Name = RDT2.County_Name AND
      RDT1.DistributionNumber = 1 AND 
      RDT2.DistributionNumber = 2 AND 
      RDT3.DistributionNumber = 3 AND 
      RDT1.County_Name = RDT3.County_Name 
WHERE Solution_id= "10" 

当我执行此查询时，我收到了回复

  

Msg 4104，Level 16，State 1，Line 1
  无法绑定多部分标识符“Solution_id”。

Solution_id是Result_Distribution_Table表中的一列。

请帮助我做错了什么，解决方案是什么？

Answer 1

每个查询只能有一个WHERE子句。另外，请避免使用旧式连接，而是使用JOIN。 注意：为solution_id col。

填写正确的表格

SELECT RDT1.County_Name
      ,RDT1.DistributionNumber as Dist_No
      ,RDT1.Vac_Allocated
      ,RDT1.Priority,RDT2.DistributionNumber as Dist_No
      ,RDT2.Vac_Allocated as Vac_Allocated
      ,RDT3.DistributionNumber as Dist_No
      ,RDT3.Vac_Allocated as Vac_Allocated 
FROM Result_Distribution_Table RDT1 JOIN  Result_Distribution_Table RDT2
      ON RDT1.County_Name = RDT2.County_Name JOIN Result_Distribution_Table RDT3 
      ON RDT1.County_Name = RDT3.County_Name
WHERE RDT1.DistributionNumber = 1 AND 
      RDT2.DistributionNumber = 2 AND 
      RDT3.DistributionNumber = 3 AND 
      [...].Solution_id= "10"

添加：注意到您使用的是同一张桌子3次。 如果是这种情况，您可以获得与<; p>相同的结果

SELECT County_Name
          ,DistributionNumber as Dist_No
          ,Vac_Allocated
          ,Priority,RDT2.DistributionNumber as Dist_No
          ,Vac_Allocated as Vac_Allocated
          ,DistributionNumber as Dist_No
          ,Vac_Allocated as Vac_Allocated 
FROM Result_Distribution_Table 
WHERE DistributionNumber IN (1,2,3) AND
          Solution_id= "10"

Answer 2

问题是因为查询中没有表格：

您似乎忘了在查询中包含该表。