我有一张看起来像这样的表:
如何从此表中选择多个子代码列转换为行?不确定这是否是PIVOT问题。请指教。
所需的样本输出:
附带SQL的数据插入脚本供您参考。
USE [TEST]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[SubCodeReport](
[ S-ID] [varchar](50) NULL,
[AGE] [varchar](50) NULL,
[SchoolCode] [varchar](50) NULL,
[SubCode] [varchar](50) NULL
) ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
/****** Object: Table [dbo].[SubCodeReport3] Script Date: 9/8/2015 6:05:30 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[SubCodeReport3](
[ S-ID] [varchar](50) NULL,
[AGE] [varchar](50) NULL,
[SchoolCode] [varchar](50) NULL,
[SubCode1] [varchar](50) NULL,
[SubCode2] [varchar](50) NULL,
[SubCode3] [varchar](50) NULL,
[SubCode4] [varchar](50) NULL,
[SubCode5] [varchar](50) NULL
) ON [PRIMARY]
GO
SET ANSI_PADDING OFF
GO
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'25', N'23', N'KEN-009', N'ENG')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'26', N'21', N'DLK-009', N'ENG')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'27', N'25', N'DLK-006', N'MAT')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'27', N'25', N'DLK-006', N'ENG')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'27', N'25', N'DLK-006', N'STAT')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'28', N'21', N'HLI-005', N'ENG')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'29', N'22', N'NUI-002', N'ENG')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'29', N'22', N'NUI-002', N'MAT')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'30', N'22', N'INN-009', N'ENG')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'30', N'22', N'INN-009', N'MAT')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'30', N'22', N'INN-009', N'ZOO')
INSERT [dbo].[SubCodeReport] ([ S-ID], [AGE], [SchoolCode], [SubCode]) VALUES (N'30', N'22', N'INN-009', N'GEO')
INSERT [dbo].[SubCodeReport3] ([ S-ID], [AGE], [SchoolCode], [SubCode1], [SubCode2], [SubCode3], [SubCode4], [SubCode5]) VALUES (N'25', N'23', N'KEN-009', N'ENG', N'', N'', N'', N'')
INSERT [dbo].[SubCodeReport3] ([ S-ID], [AGE], [SchoolCode], [SubCode1], [SubCode2], [SubCode3], [SubCode4], [SubCode5]) VALUES (N'26', N'21', N'DLK-009', N'ENG', N'', N'', N'', N'')
INSERT [dbo].[SubCodeReport3] ([ S-ID], [AGE], [SchoolCode], [SubCode1], [SubCode2], [SubCode3], [SubCode4], [SubCode5]) VALUES (N'27', N'25', N'DLK-006', N'MAT', N'ENG', N'STAT', N'', N'')
INSERT [dbo].[SubCodeReport3] ([ S-ID], [AGE], [SchoolCode], [SubCode1], [SubCode2], [SubCode3], [SubCode4], [SubCode5]) VALUES (N'28', N'21', N'HLI-005', N'ENG', N'', N'', N'', N'')
INSERT [dbo].[SubCodeReport3] ([ S-ID], [AGE], [SchoolCode], [SubCode1], [SubCode2], [SubCode3], [SubCode4], [SubCode5]) VALUES (N'29', N'22', N'NUI-002', N'ENG', N'MAT', N'', N'', N'')
INSERT [dbo].[SubCodeReport3] ([ S-ID], [AGE], [SchoolCode], [SubCode1], [SubCode2], [SubCode3], [SubCode4], [SubCode5]) VALUES (N'30', N'22', N'INN-009', N'ENG', N'MAT', N'ZOO', N'GEO', N'')
答案 0 :(得分:3)
您可以使用unpivot
来获得所需的结果。
Fiddle with sample data from the question
select [ S-ID], age, schoolcode, u.subcode
from subcodereport3
unpivot
(subcode
for x in (subcode1,subcode2,subcode3,subcode4,subcode5) ) u
where u.subcode <> ' '