如何使用具有不同ID值的同一表中的記錄更新SQL-Server 2008表

Question

我有一個IDNumber，Birthdate，Option和ID列的成員表。該ID是一個GUID，是PK。

現在，一些議員在方案1和都充滿了數據（IDNumber中，生日）列。 部分會員在其他選項中。 在此示例中，選項3上有成員與選項1上的成員具有相同的ID號（實際上它們是相同成員，具有多個選項）。 但是，這些成員的Birthdate列是空的。 我想更新我的表，以匹配選項1來自會員的生日值，以反映期權3.

從本質上說，

Option |IDNumber |Birthdate 
----------------------------------- 
1  |123  |19900101 
1  |234  |19800101 
3  |123  | 
3  |234  | 

我怎麼會去更新，以反映失蹤的生日選項3？ 我至今嘗試：

DECLARE @temp TABLE (
    --birthdate int, 
    idnumber VARCHAR(13) 
) 

INSERT INTO @temp (idnumber) 
SELECT IDNumber 
FROM Member 
WHERE 
OPTION = 1 
    AND IDNumber IN (SELECT IDNumber FROM Member WHERE OPTION = 3) 

UPDATE Member 
SET BirthDate = m2.BirthDate 
FROM Member m2 
INNER JOIN @temp m ON m.idnumber = m2.IDNumber 
WHERE 
OPTION = 3 

它說這影響了記錄，但不屬於期權成員3

我也試圖做的事：

update member set BirthDate = (select BirthDate from Member where 
Option=1 and IDNumber in(select IDNumber from Member 
where Option=3)) 
where Option=3 

它返回錯

子查詢返回多個值。當子查詢遵循=，！=，<，< =，>，> =或當子查詢用作表達式時，這是不允許的。

請你能在指出我在那裏出了錯幫助？

Answer 1

UPDATE member SET Birthdate = A.Birthdate 
    FROM 
    (
     SELECT tOption ,IDNumber ,Birthdate 
     FROM member 
     WHERE Birthdate > 0 
    ) A WHERE A.IDNumber = member.IDNumber AND member.Birthdate = 0 

Answer 2

試試下面的一個。正常工作如果我從你的問題中瞭解的是正確的。

;WITH CTE AS(
    SELECT M3.ID ,M1.BIRTHDATE FROM MEMBER M1 
    INNER JOIN MEMBER M3 ON M1.IDNUMBER = M3.IDNUMBER AND M1.OPTION=1 AND M3.OPTION=3 
    ) 

    UPDATE MEMBER SET MEMBER.BIRTHDATE = CTE.BIRTHDATE WHERE MEMBER.ID =CTE.ID 

Answer 3

您可以使用光標。這看起來像這樣

DECLARE @idNumber int, @birthdate datetime 

    DECLARE oprtion1_cursor CURSOR FOR 
    SELECT IdNumber,Birthdate 
    FROM Members WHERE Option = 1 

    OPEN oprtion1_cursor 

    FETCH NEXT FROM oprtion1_cursor 
    INTO @idNumber , @birthdate 

    WHILE @@FETCH_STATUS = 0 
    BEGIN 
    UPDATE Members SET Birthdate = @birthdate WHERE IDNumber = @idNumber AND Option = 3 

    FETCH NEXT FROM oprtion1_cursor 
    INTO @idNumber , @birthdate 

    END 

    CLOSE oprtion1_cursor; 
    DEALLOCATE oprtion1_cursor;