Nejprve musíte UNPIVOT
naše sloupce a použijte DENSE_RANK()
abych vám dal něco, o co se později můžete opřít. Vložte tento výsledek do dočasné tabulky, abyste získali čárkami oddělený seznam DESNSE_RANK
sloupců. Poté vytvořte UNION
takže Day
a Date
jsou součástí stejného sloupce jako to, co bylo unpivoted. To lze vložit do globální dočasné tabulky pro použití v dynamickém SQL. Vytvořte proměnnou, která bude ukládat seznam sloupců a vytvoří dynamické SQL a provede jej.
Úplný příklad (samozřejmě nevyhazujte PhaseFlowChart
tabulka)
-- pre-cleanup
IF OBJECT_ID('[dbo].[PhaseFlowChart]') IS NOT NULL
DROP TABLE [dbo].[PhaseFlowChart]
GO
IF OBJECT_ID('tempdb..#tmp') IS NOT NULL
DROP TABLE #tmp
GO
IF OBJECT_ID('tempdb..##tmp') IS NOT NULL
DROP TABLE ##tmp
GO
-- setup table and data
CREATE TABLE [dbo].[PhaseFlowChart](
[pfckey] [int] NULL,
[hourlykey] [bigint] NULL,
[daykey] [bigint] NULL,
[weekkey] [int] NULL,
[monthkey] [int] NULL,
[bbkey] [int] NULL,
[Day] [varchar](100) NULL,
[Date] [varchar](100) NULL,
[Bull Bear Gap] [varchar](100) NULL,
[Monthly] [varchar](100) NULL,
[Weekly] [varchar](100) NULL,
[Daily] [varchar](100) NULL,
[Hour 1] [varchar](100) NULL,
[Hour 2] [varchar](100) NULL,
[Hour 3] [varchar](100) NULL,
[Hour 4] [varchar](100) NULL,
[Hour 5] [varchar](100) NULL,
[Hour 6] [varchar](100) NULL,
[Hour 7] [varchar](100) NULL
) ON [PRIMARY]
INSERT INTO [dbo].PhaseFlowChart
([Day], [Date], [Bull Bear Gap], Monthly, Weekly, Daily,
[Hour 1], [Hour 2], [Hour 3], [Hour 4], [Hour 5], [Hour 6], [Hour 7])
VALUES
('MON', '20130101', 'P1', 'P1', 'P1', 'P1', 'P1', 'P1', 'P1', 'P1', 'P1', 'P1', 'P1'),
('TUE', '20130102', 'P2', 'P2', 'P2', 'P2', 'P2', 'P2', 'P2', 'P2', 'P2', 'P2', 'P2'),
('WED', '20130103', 'P3', 'P3', 'P3', 'P3', 'P3', 'P3', 'P3', 'P3', 'P3', 'P3', 'P3'),
('THU', '20130104', 'P4', 'P4', 'P4', 'P4', 'P4', 'P4', 'P4', 'P4', 'P4', 'P4', 'P4'),
('FRI', '20130105', 'P5', 'P5', 'P5', 'P5', 'P5', 'P5', 'P5', 'P5', 'P5', 'P5', 'P5'),
('SAT', '20130106', 'P6', 'P6', 'P6', 'P6', 'P6', 'P6', 'P6', 'P6', 'P6', 'P6', 'P6'),
('SUN', '20130107', 'P7', 'P7', 'P7', 'P7', 'P7', 'P7', 'P7', 'P7', 'P7', 'P7', 'P7')
GO
-- unpivot the columns into 'categories'
SELECT [Day], [Date], [Value], [Category],
DENSE_RANK() OVER (ORDER BY CAST([Date] AS DATE)) dr
INTO #tmp
FROM PhaseFlowChart pfc
UNPIVOT (
Value FOR Category IN ([Bull Bear Gap], Monthly, Weekly, Daily,
[Hour 1], [Hour 2], [Hour 3], [Hour 4],
[Hour 5], [Hour 6], [Hour 7])
) upiv
-- create a global temp table for use later
SELECT *
INTO ##tmp
FROM (
-- union data into single category column
SELECT 'Day' Category, [Day] Value, dr, 1 o FROM #tmp
UNION ALL
SELECT 'Date' Category, [Date] Value, dr, 2 o FROM #tmp
UNION ALL
SELECT [Category], Value, dr, 3 o FROM #tmp
) t
-- get a comma seperated list of columns for the PIVOT
DECLARE @cols VARCHAR(MAX) =
STUFF(CAST((SELECT ',' + QUOTENAME(dr)
FROM (
SELECT DISTINCT dr
FROM #tmp
) t
ORDER BY dr
FOR XML PATH(''), TYPE
) AS VARCHAR(MAX)),1,1,'')
-- create and execute the sql
DECLARE @sql VARCHAR(MAX) = '
SELECT Category, ' + @cols + '
FROM ##tmp
PIVOT (
MAX([Value])
FOR dr IN (' + @cols + ')
) piv
ORDER BY o, CASE Category
WHEN ''Daily'' THEN 4
WHEN ''Weekly'' THEN 3
WHEN ''Monthly'' THEN 2
WHEN ''Bull Bear Gap'' THEN 1
ELSE 5 END, Category
'
EXEC(@sql)