Question

我有以下数据。 Anywhere FirstName为空白我想将该Note数据组合到上一行注释的末尾。示例是数据如何显示在表中而没有排序。有没有办法通过SQL完成结果表？谢谢你的帮助！

FirstName   LastName   Note
---------   -------    --------------------------------------
John        Doe        likes bananas
Steve       Weiss      likes tomatoes and
                       also likes potatoes
John        Weiss      likes apples
Jeff        Marki      likes hotdogs
                       and also likes hambugers
Jenny       Boper      likes peaches

预期结果

FirstName   LastName   Note
---------   -------    --------------------------------------
John        Doe        likes bananas
Steve       Weiss      likes tomatoes and also likes potatoes                           
John        Weiss      likes apples
Jeff        Marki      likes hotdogs and also likes hamburgers
Jenny       Boper      likes peaches

Answer 1

Declare @YourTable table (FirstName varchar(50),LastName varchar(50),Note varchar(500))
Insert Into @YourTable values
('John','Doe','likes bananas'),
('Steve','Weiss','likes tomatoes and'),
(''     ,'','also likes potatoes'),
('John','Weiss','likes apples'),
('Jeff','Marki','likes hotdogs'),
(''    ,'','and also likes hambugers'),
('Jenny','Boper','likes peaches')

Select FirstName
      ,LastName
      ,Note     = FullText
From  (
        Select *
              ,FullText = Note+IIF(Lead(FirstName,1) over (Order By (Select null))='',' '+Lead(Note,1) over (Order By (Select Null)),'') 
         From @YourTable
      ) A
Where FirstName <>''

返回

FirstName   LastName    Note
John        Doe         likes bananas
Steve       Weiss       likes tomatoes and also likes potatoes
John        Weiss       likes apples
Jeff        Marki       likes hotdogs and also likes hambugers
Jenny       Boper       likes peaches

请注意：

我有Order By（选择null）），你应该有一个正确的序列号，即一个身份字段

Answer 2

另一种解决方案：

DECLARE @TEMP_DATA TABLE
    (
    ID INT IDENTITY(1,1),
    FIRSTNAME NVARCHAR(50),
    LASTNAME NVARCHAR(50),
    NOTE NVARCHAR(50)
    )

DECLARE @NO_NAME TABLE
    (
    IDEMPTY INT,
    EMPTYNAME NVARCHAR(50),
    EMTPYNAME NVARCHAR(50),
    NOTE2 NVARCHAR(50)
    )

INSERT  INTO @TEMP_DATA
SELECT  *
FROM    DATA

INSERT  INTO @NO_NAME
SELECT  *
FROM    @TEMP_DATA
WHERE   FIRSTNAME=''

UPDATE  @TEMP_DATA
SET     NOTE=NOTE+' '+NOTE2
FROM    @NO_NAME N
WHERE   ID=IDEMPTY-1

SELECT  FIRSTNAME,LASTNAME,NOTE FROM @TEMP_DATA WHERE NOT FIRSTNAME LIKE ''

连接两行数据

2 个答案: