Need to unpivot a table

Question

Need to unpivot a table

arvindharitus

Valued Member

Points: 67
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April 1, 2013 at 1:43 am

#275795

Hello,
I have a table like this
CREATE TABLE [temp](
[Country] [varchar](200) NULL,
[Country_Group] [varchar](200) NULL,
[Year] [varchar](200) NULL,
[R1_TV] [decimal](38, 2) NULL,
[R2_TV] [decimal](38, 2) NULL,
[R3_TV] [decimal](38, 2) NULL,
[R1_Google] [decimal](38, 2) NULL,
[R2_Google] [decimal](38, 2) NULL,
[R3_Google] [decimal](38, 2) NULL,
[R1_Yahoo] [decimal](38, 2) NULL,
[R2_Yahoo] [decimal](38, 2) NULL
) ON [PRIMARY]
and data is following
INSERT [temp] ([Country], [Country_Group], [Year], [R1_TV], [R2_TV], [R3_TV], [R1_Google], [R2_Google], [R3_Google], [R1_Yahoo], [R2_Yahoo]) VALUES (N'Greece', N'Test111', N'2011', CAST(3304.24 AS Decimal(38, 2)), CAST(5.56 AS Decimal(38, 2)), CAST(30378.95 AS Decimal(38, 2)), CAST(568.23 AS Decimal(38, 2)), CAST(4.25 AS Decimal(38, 2)), CAST(56458.00 AS Decimal(38, 2)), CAST(2456.00 AS Decimal(38, 2)), CAST(6.20 AS Decimal(38, 2)))
INSERT [temp] ([Country], [Country_Group], [Year], [R1_TV], [R2_TV], [R3_TV], [R1_Google], [R2_Google], [R3_Google], [R1_Yahoo], [R2_Yahoo]) VALUES (N'Ukraine', N'Test111', N'2011', CAST(792.12 AS Decimal(38, 2)), CAST(6.11 AS Decimal(38, 2)), CAST(32391.28 AS Decimal(38, 2)), CAST(456.14 AS Decimal(38, 2)), CAST(6.69 AS Decimal(38, 2)), CAST(78562.00 AS Decimal(38, 2)), CAST(3652.00 AS Decimal(38, 2)), CAST(736.00 AS Decimal(38, 2)))
INSERT [temp] ([Country], [Country_Group], [Year], [R1_TV], [R2_TV], [R3_TV], [R1_Google], [R2_Google], [R3_Google], [R1_Yahoo], [R2_Yahoo]) VALUES (N'ZZZZZZZZZZ', N'Test111', N'2011', CAST(2007.91 AS Decimal(38, 2)), CAST(5.66 AS Decimal(38, 2)), CAST(62770.22 AS Decimal(38, 2)), CAST(785.25 AS Decimal(38, 2)), CAST(3.21 AS Decimal(38, 2)), CAST(35412.00 AS Decimal(38, 2)), CAST(5214.00 AS Decimal(38, 2)), CAST(3.12 AS Decimal(38, 2)))
Now I want to Unpivot it like this
CREATE TABLE [tt](
[Country_Group] [varchar](200) NULL,
[Country] [varchar](200) NULL,
[Year] [varchar](200) NULL,
[Media] [nvarchar](4000) NULL,
[R1] [decimal](38, 2) NULL,
[R2] [decimal](38, 2) NULL,
[R3] [decimal](38, 2) NULL
) ON [PRIMARY]
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'Ukraine', N'2011', N'TV', CAST(792.12 AS Decimal(38, 2)), CAST(6.11 AS Decimal(38, 2)), CAST(32391.28 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'Ukraine', N'2011', N'Google', CAST(456.14 AS Decimal(38, 2)), CAST(6.69 AS Decimal(38, 2)), CAST(78562.00 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'Ukraine', N'2011', N'Yahoo', CAST(3652.00 AS Decimal(38, 2)), CAST(736.00 AS Decimal(38, 2)), CAST(0.00 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'Greece', N'2011', N'TV', CAST(792.12 AS Decimal(38, 2)), CAST(6.11 AS Decimal(38, 2)), CAST(32391.28 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'Greece', N'2011', N'Google', CAST(456.14 AS Decimal(38, 2)), CAST(6.69 AS Decimal(38, 2)), CAST(78562.00 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'Greece', N'2011', N'Yahoo', CAST(3652.00 AS Decimal(38, 2)), CAST(736.00 AS Decimal(38, 2)), CAST(0.00 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'ZZZZZZZZZZ', N'2011', N'TV', CAST(792.12 AS Decimal(38, 2)), CAST(6.11 AS Decimal(38, 2)), CAST(32391.28 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'ZZZZZZZZZZ', N'2011', N'Google', CAST(456.14 AS Decimal(38, 2)), CAST(6.69 AS Decimal(38, 2)), CAST(78562.00 AS Decimal(38, 2)))
INSERT [tt] ([Country_Group], [Country], [Year], [Media], [R1], [R2], [R3]) VALUES (N'Test111', N'ZZZZZZZZZZ', N'2011', N'Yahoo', CAST(3652.00 AS Decimal(38, 2)), CAST(736.00 AS Decimal(38, 2)), CAST(0.00 AS Decimal(38, 2)))
Please help

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Sean Lange SSC Guru Points: 286573 More actions · Answer 1

Your data is not normalized and your results are not normalized. The reason this is difficult is because your structures make this difficult.

At any rate, you did a great job posting ddl, sample data and desired output. This work on your sample data.

select Country_Group, Country, YEAR, Media, R1, R2, R3

from

(

select Country_Group, Country, YEAR, 'TV' as Media, R1_TV as R1, R2_TV as R2, R3_TV as R3, 1 as SortOrder from temp

union all

select Country_Group, Country, YEAR, 'Google', R1_Google, R2_Google, R3_Google, 2 from temp

union all

select Country_Group, Country, YEAR, 'Yahoo', R1_Yahoo, R2_Yahoo, null, 3 from temp

) x

order by Country_Group, Country, SortOrder

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

Jeff Moden SSC Guru Points: 1003861 More actions · Answer 2

Sean Lange (4/1/2013)
Your data is not normalized and your results are not normalized. The reason this is difficult is because your structures make this difficult.

Heh... I can't help wondering if that's precisely what he's trying to do. Normalize the data in a new table.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Sean Lange SSC Guru Points: 286573 More actions · Answer 3

Jeff Moden (4/1/2013)
Sean Lange (4/1/2013)
Your data is not normalized and your results are not normalized. The reason this is difficult is because your structures make this difficult.
Heh... I can't help wondering if that's precisely what he's trying to do. Normalize the data in a new table.

If that is the case then I would recommend normalizing these results or it isn't much of an improvement. 😉

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 4

Sean Lange (4/2/2013)
Jeff Moden (4/1/2013)
Sean Lange (4/1/2013)
Your data is not normalized and your results are not normalized. The reason this is difficult is because your structures make this difficult.
Heh... I can't help wondering if that's precisely what he's trying to do. Normalize the data in a new table.
If that is the case then I would recommend normalizing these results or it isn't much of an improvement. 😉

I may be wrong, but it does look like he is based on the the table he wants compared to what he has right now.

Sean Lange SSC Guru Points: 286573 More actions · Answer 5

Lynn Pettis (4/2/2013)
Sean Lange (4/2/2013)
Jeff Moden (4/1/2013)
Sean Lange (4/1/2013)
Your data is not normalized and your results are not normalized. The reason this is difficult is because your structures make this difficult.
Heh... I can't help wondering if that's precisely what he's trying to do. Normalize the data in a new table.
If that is the case then I would recommend normalizing these results or it isn't much of an improvement. 😉
I may be wrong, but it does look like he is based on the the table he wants compared to what he has right now.

Up until they need to add an R4 column.

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/