Question

EDIT2：我做了一个新的可用示例，进入了下一步，但仍然不知道如何做一些事情。请检查。

我有下表：

CREATE TABLE [dbo].[MyTable] (
             [ID] [int] IDENTITY(1,1) NOT NULL
            ,[Name] [nvarchar](50) NULL
            ,[Quantity] [int] NULL
            ,[Period] [nvarchar](10) NULL
            )

INSERT [dbo].[MyTable] VALUES
      ('foo', 1, 'Jan'),
      ('bar', 2, 'Jan'),
      ('foo', 1, 'Jan'),
      ('kin', 1, 'Jan'),
      ('blat', 5, 'Jan'),
      ('foo', 3, 'Feb'),
      ('bar', 1, 'Feb'),
      ('kin', 2, 'Feb'),
      ('blat',4, 'Feb'),
      ('foo', 1, 'Feb'),
      ('kin', 7, 'Feb'),
      ('blat', 1, 'Feb'),
      ('foo', 3, 'Mar'),
      ('bar', 1, 'Mar'),
      ('kin', 1, 'Mar'),
      ('blat', 1, 'Mar'),
      ('bar', 1, 'Mar'),
      ('kin', 2, 'Mar'),
      ('blat', 3, 'Mar')

我想通过在查询中使用PIVOT来实现图片中的结果：

到目前为止，我的查询是

DECLARE @columns NVARCHAR(MAX), @sql NVARCHAR(MAX);
SET @columns = N'';
SELECT @columns += N', p.' + QUOTENAME(Period)
  FROM (SELECT Period FROM dbo.MyTable AS p
  GROUP BY Period) AS x;
SET @sql = N'
SELECT ' + STUFF(@columns, 1, 2, '') + '
FROM
(
  SELECT Name, Period, Quantity
   FROM dbo.MyTable AS p
) AS j
PIVOT
(
  SUM(Quantity) FOR Period IN ('
  + STUFF(REPLACE(@columns, ', p.[', ',['), 1, 1, '')
  + ')
) AS p;';
EXEC sp_executesql @sql;

给我以下结果：

如何添加行名（foo，bar，kin，blat），列名Name，SUM等？

EDIT3：如何对列和记录进行“排序”？

Answer 1

托莫，你好

现在，我们有了创建表和插入数据的查询，可以轻松，快速地帮助您:-)

请检查波纹管解决方案是否满足您的需求

select [Name],[Jan],[Feb],[Mar],[Jan]+[Feb]+[Mar] AS Grand_Total
from (
    SELECT [Name], [Quantity],[Period]
    FROM [MyTable]
) src
pivot
(
  SUM(Quantity)
  for Period in ([Jan],[Feb],[Mar])
) piv
GO

下一步是将其转换为动态PIVOT，如果您需要静态PIVOT，那么一旦获得静态解决方案就非常简单，但是首先要确认静态PIVOT返回所需的信息，并且您实际上需要动态解决方案（也许满足您的需求

更新：使用ROLLUP在底部添加“总计”

;With MyCTE as(
select [Name],[Jan],[Feb],[Mar],[Jan]+[Feb]+[Mar] AS Grand_Total
from (
    SELECT [Name], [Quantity],[Period]
    FROM [MyTable]
) src
pivot
(
  SUM(Quantity)
  for Period in ([Jan],[Feb],[Mar])
) piv
)
select ISNULL([Name],'Totoal') as Name ,SUM([Jan]) [Jan],SUM([Feb]) [Feb],SUM([Mar]) [Mar],SUM([Grand_Total]) [Grand_Total]
from MyCTE
GROUP BY ROLLUP ([Name])
GO

将动态数据透视表版本添加为要求的操作

DECLARE 
    @ColumnsList1 AS NVARCHAR(MAX),
    @ColumnsList2 AS NVARCHAR(MAX),
    @ColumnsList3 AS NVARCHAR(MAX),
    @query AS NVARCHAR(MAX);

SET @ColumnsList1 = STUFF(
    (SELECT distinct ',' + QUOTENAME([Period]) FROM [MyTable] FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)') 
    ,1,1,'')
PRINT @ColumnsList1
SET @ColumnsList2 = REPLACE (@ColumnsList1, ',','+')
PRINT @ColumnsList2
SET @ColumnsList3 = (
    SELECT distinct ',SUM(' + QUOTENAME([Period]) + ') as ' + QUOTENAME([Period])
    FROM [MyTable] FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)')
PRINT @ColumnsList3

SET @query = '
;With MyCTE as(
select [Name],'+@ColumnsList1+','+@ColumnsList2+' AS Grand_Total
from (
    SELECT [Name], [Quantity],[Period]
    FROM [MyTable]
) src
pivot
(
  SUM(Quantity)
  for Period in ('+@ColumnsList1+')
) piv
)
select ISNULL([Name],''Totoal'') as Name '+@ColumnsList3+',SUM([Grand_Total]) [Grand_Total]
from MyCTE
GROUP BY ROLLUP ([Name])
'
execute(@query)
GO

如何编写具有多个记录的动态列PIVOT查询？

1 个答案: