SQL查询 - 确定谁只有一个礼物记录

Question

我想知道我怎么能有一群人最初选择中编写一个SQL脚本，这样一：

SELECT [RECORDS].[CONSTITUENT_ID] 
    ,[RECORDS].[FIRST_NAME] 
    ,[RECORDS].[LAST_NAME] 
    ,[DATEADDED] 
    ,[DTE] 
    ,[Amount] 
    ,[REF] 
    ,[TYPE] 
FROM [re7].[dbo].[GIFT] 
INNER JOIN [re7].[dbo].[RECORDS] 
ON GIFT.CONSTIT_ID LIKE RECORDS.ID 
WHERE ([DTE] BETWEEN '2/7/2015' AND '2/8/2015') 
ORDER BY [DATEADDED] DESC 

只选择个人谁是“第一时间捐助者”（或谁只有一个礼物[RE7] [DBO]。[礼物]。

[RECORDS]是所有成分表。

[礼物]是所有的表录音礼品

上述查询的输出，仅仅是一个表： CONSTITUENT_ID，名字，姓氏，DATEADDED，DTE，金额，楼盘，TYPE

我非常希望看到相同的输出格式，但我想在[re7]中查询仅选择只有1个GIFT（按他们的记录ID）的CONSTITUENT_ID [dbo]。[GIFT]。

对于缺乏显示的数据，我表示歉意。我希望我可以更好地描述....

Answer 1

SELECT [RECORDS].[CONSTITUENT_ID] 
    ,[RECORDS].[FIRST_NAME] 
    ,[RECORDS].[LAST_NAME] 
    ,[DATEADDED] 
    ,[DTE] 
    ,[Amount] 
    ,[REF] 
    ,[TYPE] 
FROM [re7].[dbo].[GIFT] 
INNER JOIN [re7].[dbo].[RECORDS] 
ON GIFT.CONSTIT_ID LIKE RECORDS.ID 
WHERE ([DTE] BETWEEN '2/7/2015' AND '2/8/2015') 
    AND GIFT.CONSTIT_ID IN (
     SELECT CONSTIT_ID FROM re7.dbo.Gift GROUP BY CONSTIT_ID HAVING COUNT(*) = 1 
    ) /* another option is to add a subquery to the query you already had */ 
ORDER BY [DATEADDED] DESC 

Answer 2

该解决方案只是简单地选择所有只做过一次捐赠并随后加入的成分，从而限制了结果集。

SELECT 
    r.[CONSTITUENT_ID] 
    ,r.[FIRST_NAME] 
    ,r.[LAST_NAME] 
    ,[DATEADDED] 
    ,[DTE] 
    ,[Amount] 
    ,[REF] 
    ,[TYPE] 
FROM 
    (select [CONSTIT_ID] from [re7].[dbo].[GIFT] group by [CONSTIT_ID] having count([CONSTIT_ID]) = 1) g1 
    inner join [re7].[dbo].[GIFT] g 
     on g.[CONSTIT_ID] = g1.[CONSTIT_ID] 
    INNER JOIN [re7].[dbo].[RECORDS] r 
     ON g.CONSTIT_ID LIKE r.RECORDS.ID 
WHERE ([DTE] BETWEEN '2/7/2015' AND '2/8/2015') 
ORDER BY [DATEADDED] DESC