select nth row of a concatenated query

Question

select nth row of a concatenated query

sh3llm4n

Old Hand

Points: 371
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June 27, 2012 at 5:51 am

#263321

Hi dudes...
i wanna select Nth row of a concatenated column... i wrote this, but it gives me error...
"SELECT TOP 1 test FROM (SELECT TOP 1 (name+cast(id as char)+xtype) as test FROM master..sysobjects ORDER BY name ASC) sq ORDER BY name DESC "
any one can help me in this topic?
Thanks...

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ChrisM@Work SSC Guru Points: 186127 More actions · Answer 1

sh3llm4n (6/27/2012)
Hi dudes...
i wanna select Nth row of a concatenated column... i wrote this, but it gives me error...
"SELECT TOP 1 test FROM (SELECT TOP 1 (name+cast(id as char)+xtype) as test FROM master..sysobjects ORDER BY name ASC) sq ORDER BY name DESC "
any one can help me in this topic?
Thanks...

[name] is not a column of derived table sq. Try this:

SELECT TOP 1 test

FROM (

SELECT TOP 1 (name+cast(id as char)+xtype) as test

FROM master..sysobjects ORDER BY name ASC

) sq

ORDER BY test DESC

^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

Lowell SSC Guru Points: 323518 More actions · Answer 2

also, to get the nth value, i'd add row number to the inner query :

declare @n int

SET @n = 4

SELECT sq.test

FROM (

SELECT row_number() over (order by name) As RW,

(name+cast(id as char)+xtype) as test

FROM master..sysobjects

) sq

WHERE sq.rw = @n --the 4th value

ORDER BY sq.test DESC

Lowell

--help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!

jake.mayher SSC Enthusiast Points: 140 More actions · Answer 3

WITH A as

(SELECT (name+cast(id as char)+xtype) test, row_number() over(order by name asc) rn

FROM master..sysobjects)

SELECT * FROM a where rn = 3 --choose whatever row number you want

-Jake

sh3llm4n Old Hand Points: 371 More actions · Answer 4

Thanks alot dudes...

😛

It works as good as past...

Jeff Moden SSC Guru Points: 1004365 More actions · Answer 5

sh3llm4n (6/30/2012)
Thanks alot dudes...
😛
It works as good as past...

Heh... "dudes". Not a compliment where I come from. 😉

--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.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

J Livingston SQL SSC Guru Points: 51550 More actions · Answer 6

Jeff Moden (7/1/2012)
sh3llm4n (6/30/2012)
Thanks alot dudes...
😛
It works as good as past...
Heh... "dudes". Not a compliment where I come from. 😉

a colloquial meaning, maybe?

no offence where where I come from...though not the way I would prefer to be addressed...however, saying that, I can confirm that I have been addressed in many ways...several of which I would deem to be far worse than 'dude'.......:w00t:

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