Using PIVOT or any other concept to transform row values to column values

Question

Using PIVOT or any other concept to transform row values to column values

hemanth T

SSC Eights!

Points: 807
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August 29, 2012 at 12:04 am

#280490

Hi Everyone,
I am in need of display results but stuck in middle.
I have two results different ways.
Result1
col1 col2 col3 col4
-------------------------
1 X M abc
2 X M pqr
Result2:
col1 col2 col3 col4 col5 col6
--------------------------------------
X M null null pqr null
X M abc null null null
From any one of the above results i have--and need to get result like
Desired result:
col1 col2 col3 col4 col5 col6
--------------------------------------
X M abc null pqr null
Please can anyone suggest any idea how to get desired result using PIVOT or any other??
Remember the abc,pqr valued columns are varchar strings
Thanks,
Hemanth.

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Dwain Camps SSC Guru Points: 86948 More actions · Answer 1

How do you know that abc belongs in col3 and pqr belongs in col5?

My mantra: No loops! No CURSORs! No RBAR! Hoo-uh![/I]
My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.

Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
Since random numbers are too important to be left to chance, let's generate some![/url]
Learn to understand recursive CTEs by example.[/url]
[url url=http://www.sqlservercentral.com/articles/St

laurie-789651 SSCertifiable Points: 7680 More actions · Answer 2

This looks easy enough to solve given a bit more information.

Can you post the queries that gave the results above, and if you posted some sample data you would most likely get a solution straight away.

laurie-789651 SSCertifiable Points: 7680 More actions · Answer 3

Based on what we've got so far, this could be what you want:

--=======================================================

-- Test data:

--=======================================================

drop table #temp;

create table #temp

(

col1 int,

col2 char(1),

col3 char(1),

col4 char(3)

);

insert #temp values ( 1, 'X', 'M', 'abc' );

insert #temp values ( 2, 'X', 'M', 'pqr' );

--=======================================================

-- Solution:

--=======================================================

select

col1=col2,

col2=col3,

col3=max(case when col1=1 then col4 else null end),

col4=null,

col5=max(case when col1=2 then col4 else null end),

col6=null

from #temp

group by col2, col3;