Un-rotate Table?

Posted on 2012-04-04
Last Modified: 2012-04-04
I have a table that has fields named similar to:
.  (field names between Sales_03 and Sales_10)

What I need is to un-rotate the table so that I have a new (display) field called "month" and the Sales_?? fields separated by month and just called Sales.

So, if my table has data such as this:
Company Employee Year Sales_01 Sales_02 Sales_03 Sales_04 Sales_05 (trimmed out, but you get the idea)
ABC     12345    2011 12345.67 62534.23 98737.32 92873.34 12343.30 

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The resulting data will look like this:
Company Employee Year Month Sales
ABC     12345    2011     1 12345.67 
ABC     12345    2011     2 62534.23 
ABC     12345    2011     3 98737.32 
ABC     12345    2011     4 92873.34 
ABC     12345    2011     5 12343.30 

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I thought the T-SQL command "UNPIVOT" would work, but I'm not sure how to use it, and how the month field would appear.

Question by:Clif
LVL 18

Accepted Solution

lludden earned 500 total points
ID: 37807274
Something like this:
DECLARE @T TABLE (Company VARCHAR(10),Employee INT, [year] INT, Sales01 INT, Sales02 INT, Sales03 INT, Sales04 INT)
INSERT INTO @T SELECT 'ABC',12345,2011,555,444,666,888

SELECT Company, Employee, year, cast(RIGHT(Sales,2) AS INT) AS [Month], SalesAmt
UNPIVOT (SalesAmt FOR Sales IN (Sales01, Sales02, Sales03, Sales04)) AS uv
) T1

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LVL 10

Author Closing Comment

ID: 37807492
That was perfect, thanks.

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