Question

我做了一个静态数据透视表，这意味着我列出了数据透视表列名..，这是我的代码..

SELECT Date, 
ISNULL(XSP, 'X')as XSP,
ISNULL(BSR, 'X')as BSR,
ISNULL(BPT, 'X')as BPT,
ISNULL(XPW, 'X')as XPW,
ISNULL(IPH, 'X')as IPH,
ISNULL(XTH, 'X')as XTH,
ISNULL(TGG, 'X')as TGG,
ISNULL(XKG, 'X')as XKG,
ISNULL(XKM, 'X')as XKM,
ISNULL(XLG, 'X')as XLG,
ISNULL(KBR, 'X')as KBR,
ISNULL(KUA, 'X')as KUA,
ISNULL(LGK, 'X')as LGK,
ISNULL(MKZ, 'X')as MKZ,
ISNULL(PEN, 'X')as PEN,
ISNULL(XGM, 'X')as XGM,
ISNULL(JHB, 'X')as JHB,
ISNULL(XBN, 'X')as XBN,
ISNULL(STW, 'X')as STW,
ISNULL(TIN, 'X')as TIN,
ISNULL(MUA, 'X')as MUA
FROM
(SELECT DISTINCT userid, status , DATEPART(dd, [date]) as Date
FROM edrsDB..tbl_status
WHERE DATEPART(MM, [date]) = 3
And DATEPART(YYYY, [date]) = 2017
Union 
SELECT DISTINCT userid, status , DATEPART(DD,[date]) as Date
FROM edrsDB..tbl_public_holiday
WHERE DATEPART(MM, [date]) = 3
And DATEPART(YYYY, [date]) = 2017
Union
SELECT DISTINCT userid, status , DATEPART(DD,[Date]) as Date 
FROM edrsDB..tbl_station_weekend
WHERE DATEPART(MM, [date]) = 3
And DATEPART(YYYY, [date]) = 2017
And date IS NOT NULL) AS monthlyRpt
PIVOT (MAX(status)
FOR userid IN (XSP, BSR, BPT, XPW, IPH, XTH, TGG, XKG, XKM, XLG, KBR, KUA, LGK,MKZ, PEN, XGM, JHB, XBN, STW, TIN, MUA)) AS pivottable

执行完所有这些代码后，它会像这样输出，列包括日期和所有代码名称

This is the output image of query above

那么如何才能将代码更改为动态数据库..任何想法？

Answer 1

假设您有一个包含userid的表。你的查询将是这样的：

   DECLARE @User AS TABLE (UserId varchar(50))
   INSERT INTO @User VALUES ('XSP'), ('BSR'), ('BPT')

   DECLARE @HeaderText nvarchar(max) 
   DECLARE @ColumnPiVot nvarchar(max)

   SELECT @ColumnPiVot = Stuff((SELECT concat(', ',td.UserId) FROM (select DISTINCT tt.UserId  
                                                         FROM @User tt ) td FOR XML PATH (''))
                         ,1,1,''),
         @HeaderText = CONCAT( N'Date, ' ,  Stuff((SELECT concat(', ISNULL(',td.UserId,',0) AS', ' ',td.UserId ) 
                                            FROM (select DISTINCT tt.UserId FROM @User tt ) td FOR XML PATH (''))
                                      ,1,1,''))
   DECLARE @query nvarchar(max) = CONCAT(N'SELECT ' , @HeaderText,
   ' FROM
      (
         SELECT DISTINCT userid, status , DATEPART(dd, [date]) as Date
         FROM edrsDB..tbl_status
         WHERE   DATEPART(MM, [date]) = 3
                And DATEPART(YYYY, [date]) = 2017
         Union 
         SELECT DISTINCT userid, status , DATEPART(DD,[date]) as Date
         FROM edrsDB..tbl_public_holiday
         WHERE   DATEPART(MM, [date]) = 3
                And DATEPART(YYYY, [date]) = 2017
         Union
         SELECT DISTINCT userid, status , DATEPART(DD,[Date]) as Date 
         FROM edrsDB..tbl_station_weekend
         WHERE   DATEPART(MM, [date]) = 3
                And DATEPART(YYYY, [date]) = 2017
                And date IS NOT NULL
      ) AS monthlyRpt
   PIVOT 
      (MAX(status) FOR userid IN, (',@ColumnPiVot,')) AS pivottable')
   PRINT @query
   exec sp_executesql  @query

将静态数据透视更改为动态数据透视sql

1 个答案: