SQL Server Daynamic视图列数 [英] sql server daynamic view column count

问题描述

我必须编程一个sql过程来获得结果，结果将连接不同记录的所有字段，我所拥有的是一个视图，在此视图中记录的数量具有相同的ID，然后我必须返回此视图格式

I have to program a sql procedure to get a result, the result will concatenate all fields of the different records, what i have is a view, in this view number of records has the same ID then I have to return of this format

ID   F
1    1
1    2
1    3
1    4
1    5

我可以重复的次数更多还是ID更少，所以f的数量必须和重复次数一样多

may i have more repetition or ID or less so the f''s must be as much I have repetitions

ID   f1   f2   f3 f4  f5
1     1    2   3   4   5

推荐答案

尝试一下:

Try this:

DECLARE @cols NVARCHAR(200)
DECLARE @dt NVARCHAR(1000)
DECLARE @pt NVARCHAR(2000)

SET @cols = STUFF((SELECT DISTINCT '],[' + F
					FROM YourDataBase 
					ORDER BY '],[' + F
			FOR XML PATH('')),1,2,'') + ']'

SET @dt = 'SELECT * ' +
        'FROM YourTable'

SET @pt = 'SELECT ID, ' + @cols + ' ' +
        'FROM (' + @dt + ') AS DT ' +
        'PIVOT(MAX(F) FOR(ID) IN (' + @cols + ')) AS PT ' +
        'ORDER BY ID'
EXEC (@pt)

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