從Table2選擇到Table中的表（子查詢）

Question

SELECT .... ColumnNames ...
INTO [FOUND_DUPLICATES] 
FROM [FIND_DUPLICATES] AS FD
WHERE FD.[Contract No] IN 
    (SELECT [Contract No],
            [Vehicle Identity number (VIN)],
            COUNT(*) AS Anzahl 
    FROM FIND_DUPLICATES
    GROUP BY 
            [Contract No],
            [Vehicle Identity number (VIN)]
    HAVING COUNT(*) >1)

在這里你可以看到我想要的:)

查找重復項並將其復制到另一個表。 但是用此代碼我得到一個錯誤：

如果未使用EXISTS引入子查詢，則只能在選擇列表中指定一個表達式。

用於查找重復項的SELECT語句運行良好。 但是我有一個問題，即選擇“僅選擇”並將其僅復制到新表中並復制到新表中。

我希望你能理解我想要的，任何人都可以幫助我:)

//編輯：我正在使用SQL Server 2008 R2

Answer 1

您可以使用此：

SELECT  .... ColumnNames ...

INTO [FOUND_DUPLICATES] 
FROM [FIND_DUPLICATES] AS FD
WHERE FD.[Contract No] IN
(
  SELECT 
    [Contract No]
  FROM FIND_DUPLICATES
  GROUP BY 
     [Contract No],
     [Vehicle Identity number (VIN)]
  HAVING COUNT(*) >1
)

或使用相關子查詢：

SELECT .... ColumnNames ...

INTO [FOUND_DUPLICATES] 
FROM [FIND_DUPLICATES] AS FD
WHERE EXISTS 
(
    SELECT 1
    FROM FIND_DUPLICATES FD1
    WHERE FD.[Contract No] = FD1.[Contract No]
    GROUP BY 
        FD1.[Contract No],
        FD1.[Vehicle Identity number (VIN)]
    HAVING COUNT(*) >1
)

Answer 2

添加另一個子查詢應該工作嗎？

Select  .... ColumnNames ...

INTO [FOUND_DUPLICATES] 
    FROM [FIND_DUPLICATES]
    AS FD
    where FD.[Contract No] 
       IN (  Select [Contract No] from (Select 
        [Contract No],
        [Vehicle Identity number (VIN)],
        COUNT(*) AS Anzahl 
    from FIND_DUPLICATES
    group by 
        [Contract No],
        [Vehicle Identity number (VIN)]
    having count(*) >1)x)

Answer 3

Select  .... ColumnNames ...

INTO [FOUND_DUPLICATES] 
    FROM [FIND_DUPLICATES]
    AS FD
    where FD.[Contract No] 
       IN (
       select [Contract No] from (Select --inner sub query 
        [Contract No],
        [Vehicle Identity number (VIN)],
        COUNT(*) AS Anzahl 
    from FIND_DUPLICATES
    group by 
        [Contract No],
        [Vehicle Identity number (VIN)]
    having count(*) >1) )