sql - 将动态生成的数据透视表放入临时表

Question

我见过这个，所以我知道如何使用一组动态生成的字段创建数据透视表。我现在的问题是我想将结果放入一个临时表中。

我知道为了从EXEC语句中将结果集放入临时表中，您需要预定义临时表。在动态生成的数据透视表的情况下，没有办法事先知道这些字段。

我能想到的获得这种功能的唯一方法是使用动态 SQL 创建一个永久表。有没有更好的办法？

Answer 1

今天跑到这个问题上，并在我的博客上发布。解决方案的简短描述是创建一个包含一列的临时表，然后使用 sp_executesql 动态更改它。然后您可以将动态 PIVOT 的结果插入其中。下面的工作示例。

CREATE TABLE #Manufacturers
(
    ManufacturerID INT PRIMARY KEY,
    Name VARCHAR(128)
)

INSERT INTO #Manufacturers (ManufacturerID, Name)
VALUES (1,'Dell')
INSERT INTO #Manufacturers (ManufacturerID, Name)
VALUES (2,'Lenovo')
INSERT INTO #Manufacturers (ManufacturerID, Name)
VALUES (3,'HP')

CREATE TABLE #Years
(YearID INT, Description VARCHAR(128))
GO

INSERT INTO #Years (YearID, Description) VALUES (1, '2014')
INSERT INTO #Years (YearID, Description) VALUES (2, '2015')
GO

CREATE TABLE #Sales
(ManufacturerID INT, YearID INT,Revenue MONEY)
GO

INSERT INTO #Sales (ManufacturerID, YearID, Revenue) VALUES(1,2,59000000000)
INSERT INTO #Sales (ManufacturerID, YearID, Revenue) VALUES(2,2,46000000000)
INSERT INTO #Sales (ManufacturerID, YearID, Revenue) VALUES(3,2,111500000000)
INSERT INTO #Sales (ManufacturerID, YearID, Revenue) VALUES(1,1,55000000000)
INSERT INTO #Sales (ManufacturerID, YearID, Revenue) VALUES(2,1,42000000000)
INSERT INTO #Sales (ManufacturerID, YearID, Revenue) VALUES(3,1,101500000000)
GO

DECLARE @SQL AS NVARCHAR(MAX)
DECLARE @PivotColumnName AS NVARCHAR(MAX)
DECLARE @TempTableColumnName AS NVARCHAR(MAX)
DECLARE @AlterTempTable AS NVARCHAR(MAX)

--get delimited column names for various SQL statements below
SELECT 
    -- column names for pivot
    @PivotColumnName= ISNULL(@PivotColumnName + N',',N'') + QUOTENAME(CONVERT(NVARCHAR(10),YearID)),
    -- column names for insert into temp table
    @TempTableColumnName = ISNULL(@TempTableColumnName + N',',N'') + QUOTENAME('Y' + CONVERT(NVARCHAR(10),YearID)),
    -- column names for alteration of temp table
    @AlterTempTable = ISNULL(@AlterTempTable + N',',N'') + QUOTENAME('Y' + CONVERT(NVARCHAR(10),YearID)) + ' MONEY' 
FROM (SELECT DISTINCT [YearID] FROM #Sales) AS Sales

CREATE TABLE #Pivot
(
     ManufacturerID INT
)

-- Thats it! Because the following step will flesh it out.

SET @SQL = 'ALTER TABLE #Pivot ADD ' + @AlterTempTable
EXEC sp_executesql @SQL

--execute the dynamic PIVOT query into the temp table 
SET @SQL =  N'
    INSERT INTO #Pivot (ManufacturerID, ' + @TempTableColumnName + ')
    SELECT ManufacturerID, ' + @PivotColumnName + '
    FROM #Sales S
    PIVOT(SUM(Revenue) 
      FOR S.YearID IN (' + @PivotColumnName + ')) AS PivotTable'
EXEC sp_executesql @SQL

SELECT M.Name, P.*
FROM #Manufacturers M
INNER JOIN #Pivot P ON M.ManufacturerID = P.ManufacturerID

Answer 2

你可以这样做：

-- add 'loopback' linkedserver 
if exists (select * from master..sysservers where srvname = 'loopback')
    exec sp_dropserver 'loopback'
go
exec sp_addlinkedserver @server = N'loopback',
    @srvproduct = N'',
    @provider = N'SQLOLEDB', 
    @datasrc = @@servername
go

declare @myDynamicSQL varchar(max)
select @myDynamicSQL = 'exec sp_who'
exec('
    select * into #t from openquery(loopback, ''' + @myDynamicSQL + ''');
    select * from #t
    ')

编辑：添加动态 sql 以接受参数到 openquery

Answer 3

让我试试这个 select into 的解释。我也在运行 SQL Server 2005。因为您有 PIVOT 表，所以我将假设相同或 2008 年。

select 
    o.*,
    OtherField1,
    OtherField2
INTO #temp
FROM
    OriginalOtherData as ood
PIVOT (
    MAX([Value])
    FOR Field in (OtherField1, OtherField2)
) as piv
RIGHT OUTER join
    Original o on o.OriginalSD = piv.OriginalSD

select * from #temp
Drop table #temp

普通选择和选择进入之间的唯一区别是 INTO #table 部分。

Answer 4

• 用于查询（从表名中选择 col1、col2、col3
• col1 成为 rowlabels
• col2 成为列标题

• col3 是数据集

• 也摆脱了全局表

  if OBJECT_ID('tempdb..#3') is not null drop table #3
  if OBJECT_ID('tempdb..##3') is not null drop table ##3
  DECLARE @cols AS NVARCHAR(MAX),
      @query  AS NVARCHAR(MAX)
  select @cols = STUFF((SELECT distinct ',' + QUOTENAME(   col2    ) from    tablename    FOR XML PATH(''), col2).value('.', 'NVARCHAR(MAX)'),1,1,'')
  set @query = 'SELECT col1, ' + @cols + ' into ##3 from ( select col1, col2, col3 from tablename ) x  pivot (  max(col3)for col2 in (' + @cols + ')) p '
  execute(@query)   
  select * into #3 from ##3 if OBJECT_ID('tempdb..##3') -- is not null drop table ##3