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Sql server sorting issues


Sql server sorting issues

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moeessack123
moeessack123
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Hi Guys.I need some help
I'm doing a sellers report for my boss.
I have done a top sellers and it worked fine.I have even done a worst sellers and it worked
I need to do something that is neither top nor worst.
It has to be a middle sellers report

Does sql have any syntax for sorting that out

If i sort by asc it gives me the lowest figures
If i sort by desc it gives me highest figures.

Is there any way to sort the middle figures out?
Brandie Tarvin
Brandie Tarvin
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Yes, you can sort out the middle. The easiest way to do it would be to create 2 temp tables. One for worst sellers, one for top sellers. Then join the sellers table to both of these tables and select everyone who does not exist in one of the other two tables.

Common Table Expressions would also work for this too, but I find temp tables the easiest to do for those who haven't learned CTEs yet.

Brandie Tarvin, MCITP Database AdministratorLiveJournal Blog: http://brandietarvin.livejournal.com/On LinkedIn!, Google+, and Twitter.Freelance Writer: ShadowrunLatchkeys: Nevermore, Latchkeys: The Bootleg War, and Latchkeys: Roscoes in the Night are now available on Nook and Kindle.
moeessack123
moeessack123
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Let me give that a try.thanks
Any easier way?
Brandie Tarvin
Brandie Tarvin
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I know half a dozen ways to do what you've requested. But any easier than the easiest way I posted above?

If you find one, let me know.

Brandie Tarvin, MCITP Database AdministratorLiveJournal Blog: http://brandietarvin.livejournal.com/On LinkedIn!, Google+, and Twitter.Freelance Writer: ShadowrunLatchkeys: Nevermore, Latchkeys: The Bootleg War, and Latchkeys: Roscoes in the Night are now available on Nook and Kindle.
moeessack123
moeessack123
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Thanks
TomThomson
TomThomson
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Brandie Tarvin (9/19/2013)
I know half a dozen ways to do what you've requested. But any easier than the easiest way I posted above?

If you find one, let me know.

Rather than writing the query you described as the final step of your method, wouldn't it be easier to write
SELECT * FROM #ALLSELLERS 
EXCEPT SELECT * FROM #WORSTSELLERS
EXCEPT SELECT * FROM #TOPSELLERS


or even
SELECT * FROM #ALLSELLERS EXCEPT (
SELECT * FROM #WORSTSELLERS UNION ALL SELECT * FROM #TOPSELLERS)


if you think using brackets makes it less confusing.

Tom

Jeff Atherton
Jeff Atherton
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As a side note, this does get easier in SQL 2012 with OFFSET-FETCH:

http://www.dbadiaries.com/new-t-sql-features-in-sql-server-2012-offset-and-fetch
mickyT
mickyT
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Hi you could also use NTILE.

As an example
WITH sampledata AS (
SELECT *, NTILE(5) OVER (ORDER BY Numbers DESC) N
FROM (VALUES
('A',134)
,('B',122)
,('C',88)
,('D',82)
,('E',33)
,('F',22)
,('G',18)
,('H',4)
,('I',1)
,('J',1)
) SD(Book,Numbers)
)
SELECT Book, Numbers,
CASE WHEN N = 1 THEN 'TOP 20%'
WHEN N = 5 THEN 'BOTTOM 20%'
WHEN N = 3 THEN 'MIDDLE 20%'
ELSE ''
END
FROM sampledata
--WHERE N = 3



Edit: cleaned up query a bit to make it clearer
Brandie Tarvin
Brandie Tarvin
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NTILE?

This is the first time I've heard of that one. Thanks, Micky.

Brandie Tarvin, MCITP Database AdministratorLiveJournal Blog: http://brandietarvin.livejournal.com/On LinkedIn!, Google+, and Twitter.Freelance Writer: ShadowrunLatchkeys: Nevermore, Latchkeys: The Bootleg War, and Latchkeys: Roscoes in the Night are now available on Nook and Kindle.
Brandie Tarvin
Brandie Tarvin
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L' Eomot Inversé (9/19/2013)
Brandie Tarvin (9/19/2013)
I know half a dozen ways to do what you've requested. But any easier than the easiest way I posted above?

If you find one, let me know.

Rather than writing the query you described as the final step of your method, wouldn't it be easier to write
SELECT * FROM #ALLSELLERS 
EXCEPT SELECT * FROM #WORSTSELLERS
EXCEPT SELECT * FROM #TOPSELLERS


or even
SELECT * FROM #ALLSELLERS EXCEPT (
SELECT * FROM #WORSTSELLERS UNION ALL SELECT * FROM #TOPSELLERS)


if you think using brackets makes it less confusing.


Given the question, I wasn't sure if the OP knew about the EXCEPT operator, so I opted to keep it simple with the very basics I thought (s)he would know.

Brandie Tarvin, MCITP Database AdministratorLiveJournal Blog: http://brandietarvin.livejournal.com/On LinkedIn!, Google+, and Twitter.Freelance Writer: ShadowrunLatchkeys: Nevermore, Latchkeys: The Bootleg War, and Latchkeys: Roscoes in the Night are now available on Nook and Kindle.
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