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SQL Server 2008
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T-SQL (SS2K8)
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Pivot And Unpivot Table
12 posts, Page 1 of 2
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Pivot And Unpivot Table
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Shadab Shah
Shadab Shah
Posted Friday, August 03, 2012 5:07 AM
SSC-Enthusiastic
Group: General Forum Members
Last Login: 2 days ago @ 6:48 AM
Points: 160,
Visits: 334
Hi,
I am a newbie in sql server.I have came across various article on internet which shows how to implement pivot and un-pivot table. Since there are various gurus of sql server in this forum, i would like to know from them wheather they had used this feature in any of there project. And even though if you had used the above feature what would have being the alternate solution to the problem if you had being not using this feature.
Post #1339734
SomewhereSomehow
SomewhereSomehow
Posted Friday, August 03, 2012 5:22 AM
SSC Journeyman
Group: General Forum Members
Last Login: Tuesday, May 14, 2013 10:52 PM
Points: 75,
Visits: 410
When you asking about alternate solution you, do mean funtctional equivalent? you may use case+group by instead of pivot, and cross apply instead of unpivot. You may also check out these article about
unpivot
.
I am really sorry for my poor gramma. And I hope that value of my answers will outweigh the harm for your eyes.
Blog: http://somewheresomehow.ru
Twitter: @SomewereSomehow
Post #1339740
Shadab Shah
Shadab Shah
Posted Friday, August 03, 2012 6:33 AM
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Last Login: 2 days ago @ 6:48 AM
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yeah i was expecting functional requriment. But again the new question that comes to mind is if we do have an alternate solution then why unpivot and pivot.
Since i am new to SQL Server just curios to know it
Post #1339778
Kirby1367
Kirby1367
Posted Friday, August 03, 2012 6:45 AM
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Last Login: Monday, October 22, 2012 12:21 PM
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In the past I have used PIVOT/ UNPIVOT along side dynamic SQL mainly in ETL scripts.
For example I was importing data that was stored in columns and needed it in a single row in the target DB.
Post #1339784
vinu512
vinu512
Posted Saturday, August 04, 2012 4:13 AM
Ten Centuries
Group: General Forum Members
Last Login: Tuesday, May 14, 2013 4:11 AM
Points: 1,042,
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Using Pivot/unpivot could be more than just a matter of choice. You can definitely avoid the Pivot with Case+Group but then you come across situations where you can't use Case+Group. This could be because the columns are not Static and you need to get the Columns Dynamically.
In these situations you can't avoid the Pivot and have to go with a
Dynamic CrossTab
.
For other situations it is a matter of choice and can be avoided.
Vinu Vijayan
For better and faster solutions please check...
"How to post data/code on a forum to get the best help" - Jeff Moden
Post #1340177
dwain.c
dwain.c
Posted Monday, August 06, 2012 7:04 PM
SSCrazy
Group: General Forum Members
Last Login: Today @ 5:54 PM
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Visits: 3,160
SomewhereSomehow (8/3/2012)
When you asking about alternate solution you, do mean funtctional equivalent? you may use case+group by instead of pivot, and cross apply instead of unpivot. You may also check out these article about
unpivot
.
Wow! You quoted me!
Thanks for taking the time to read my article. I was wondering who that was.
No loops! No CURSORs! No RBAR! Hoo-uh!
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?
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Are you too recursively challenged?
Splitting strings based on patterns can be fast!
Post #1340963
vinu512
vinu512
Posted Monday, August 06, 2012 10:21 PM
Ten Centuries
Group: General Forum Members
Last Login: Tuesday, May 14, 2013 4:11 AM
Points: 1,042,
Visits: 1,438
dwain.c (8/6/2012)
SomewhereSomehow (8/3/2012)
When you asking about alternate solution you, do mean funtctional equivalent? you may use case+group by instead of pivot, and cross apply instead of unpivot. You may also check out these article about
unpivot
.
Wow! You quoted me!
Thanks for taking the time to read my article. I was wondering who that was.
Wow!!....Don't forget me Dwain now that you have become all famous after writing that article.....lol
Vinu Vijayan
For better and faster solutions please check...
"How to post data/code on a forum to get the best help" - Jeff Moden
Post #1340988
dwain.c
dwain.c
Posted Monday, August 06, 2012 10:25 PM
SSCrazy
Group: General Forum Members
Last Login: Today @ 5:54 PM
Points: 2,338,
Visits: 3,160
vinu512 (8/6/2012)
dwain.c (8/6/2012)
SomewhereSomehow (8/3/2012)
When you asking about alternate solution you, do mean funtctional equivalent? you may use case+group by instead of pivot, and cross apply instead of unpivot. You may also check out these article about
unpivot
.
Wow! You quoted me!
Thanks for taking the time to read my article. I was wondering who that was.
Wow!!....Don't forget me Dwain now that you have become all famous after writing that article.....lol
How could I forget you Vinu, despite the fame and glory of being published! Now, all that awaits is the fortune coming my way and I'll be set.
No loops! No CURSORs! No RBAR! Hoo-uh!
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?
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Are you too recursively challenged?
Splitting strings based on patterns can be fast!
Post #1340989
vinu512
vinu512
Posted Monday, August 06, 2012 10:35 PM
Ten Centuries
Group: General Forum Members
Last Login: Tuesday, May 14, 2013 4:11 AM
Points: 1,042,
Visits: 1,438
dwain.c (8/6/2012)
vinu512 (8/6/2012)
dwain.c (8/6/2012)
SomewhereSomehow (8/3/2012)
When you asking about alternate solution you, do mean funtctional equivalent? you may use case+group by instead of pivot, and cross apply instead of unpivot. You may also check out these article about
unpivot
.
Wow! You quoted me!
Thanks for taking the time to read my article. I was wondering who that was.
Wow!!....Don't forget me Dwain now that you have become all famous after writing that article.....lol
How could I forget you Vinu, despite the fame and glory of being published! Now, all that awaits is the fortune coming my way and I'll be set.
All my wishes are with you Dwain....keep learning and keep writing stuff like that so that Learners like me can learn from your Experiences....All the Best!!
Vinu Vijayan
For better and faster solutions please check...
"How to post data/code on a forum to get the best help" - Jeff Moden
Post #1340992
dwain.c
dwain.c
Posted Monday, August 06, 2012 10:38 PM
SSCrazy
Group: General Forum Members
Last Login: Today @ 5:54 PM
Points: 2,338,
Visits: 3,160
What? You mean you read it too, Vinu?
An interesting use case just appeared here:
http://www.sqlservercentral.com/Forums/Topic1339633-392-3.aspx#bm1340977
The discussion thread also sheds further light on its performance, just in case you didn't go through it. There's some more research to do, but it looks pretty good overall on performance.
No loops! No CURSORs! No RBAR! Hoo-uh!
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?
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Are you too recursively challenged?
Splitting strings based on patterns can be fast!
Post #1340994
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