SQL錯誤 - 多部分標識符無法綁定

Question

我試圖獲取數據的水平輸出格式

查詢是：

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" 

當我執行此查詢，我得到響應

消息4104，級別16，狀態1，行1
多部分標識符 「Solution_id」 不能被約束。

Solution_id處於Result_Distribution_Table表中的列。

請幫忙，什麼我做錯了什麼解決？

Answer 1

你可以有每個查詢只有一個WHERE條款。還應避免使用舊式加入，而應使用JOIN。 注意：填寫solution_id col的正確表格alies。

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" 

補充說：只注意到你正在使用同一個表的3倍。 如果是這種情況您可以得到相同的結果;

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

的問題是因爲在查詢中沒有表：

看起來你忘了，包括您的查詢表。