Any set-based solutions to this problem?

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Any set-based solutions to this problem?

virgilrucsandescu

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Points: 2457
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July 17, 2012 at 12:19 pm

#261226

Given a dataset like this:
[font="Arial"]Name Quarter Amount1Date1 Amount2 Date2 Amount3 Date3
n1 q1 100 1/3/2012
n1 q1 200 2/2/2012 300 1/3/2012
n1 q1 400 2/7/2012 500 8/1/2012
n1 q1 600 7/1/2012[/font]
is there any set-based solution to transform it in something like this:
Name Quarter Amount1Date1 Amount2Date2Amount3 Date3
n1q1100 1/3/20123001/3/20125008/1/2012
n1q1200 2/2/2012400 2/7/20126007/1/2012
It is easy to write a cursor-based solution, I am curious if set-based is possible in this case

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Sean Lange SSC Guru Points: 286590 More actions · Answer 1

You have been around here long enough to know that you should post ddl, sample data and desired output. Read the article at the first link in my signature. Post some details and you will get some help.

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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: 1004356 More actions · Answer 2

virgilrucsandescu (7/17/2012)
Given a dataset like this:
[font="Arial"]Name Quarter Amount1Date1 Amount2 Date2 Amount3 Date3
n1 q1 100 1/3/2012
n1 q1 200 2/2/2012 300 1/3/2012
n1 q1 400 2/7/2012 500 8/1/2012
n1 q1 600 7/1/2012[/font]
is there any set-based solution to transform it in something like this:
Name Quarter Amount1Date1 Amount2Date2Amount3 Date3
n1q1100 1/3/20123001/3/20125008/1/2012
n1q1200 2/2/2012400 2/7/20126007/1/2012
It is easy to write a cursor-based solution, I am curious if set-based is possible in this case

It looks like you tried to do a PIVOT and didn't quite make it. I recommmend you post the code that put the data into this condition and fix that.

--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.

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