Problem with Query

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Problem with Query

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Jeff Moden SSC Guru Points: 1004339 More actions · Answer 1

ChandraMohan Nandula (7/23/2009)
Hi Jeff,
Thanks a lot for providing the solution. I will check it and revert back to you.

Thanks, Chandra. I appreciate the feedback.

--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)

Jeff Moden SSC Guru Points: 1004339 More actions · Answer 2

. (7/24/2009)
I just want to say again that your solution was really pretty Jeff. Mine was also based on a ctes using row_number(), but yours was much faster and more concise. I never thought to use row_number() twice in one statement.

Thanks. Bob. I can't take the credit for it though. It's one of those nifty tricks that I recently learned (about 3 months ago). There was a post about someone winning a contest with that same method... it was the only thing that beat the "quirky" update method (it didn't win by much but has the advantage of being able to do it in a single query instead of using a temp table, meaning that it can be used in a view if necessary). It was one of the few times that I labeled someone's code as "freakin' brilliant". Obviously, I was greatly impressed.

I'll see if I can find the URL that started it all on this method if you're interested.

--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)

The Dixie Flatline SSC Guru Points: 53354 More actions · Answer 3

No need. I have already filed the solution you posted in my toolbox. Thanks 🙂

__________________________________________________

Against stupidity the gods themselves contend in vain. -- Friedrich Schiller
Stop, children, what's that sound? Everybody look what's going down. -- Stephen Stills

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 4

Actually Jeff, please do post the url when you find it.

The Dixie Flatline SSC Guru Points: 53354 More actions · Answer 5

No, no, no. Don't post it whatever you do!!

__________________________________________________

Against stupidity the gods themselves contend in vain. -- Friedrich Schiller
Stop, children, what's that sound? Everybody look what's going down. -- Stephen Stills

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 6

.,.,., why not let Jeff post the url? Others, like myself, may just benefit ... oh, you want to keep us in the dark, like mushrooms! 😛

The Dixie Flatline SSC Guru Points: 53354 More actions · Answer 7

My wife phrases it "Keep us in the dark and feed us manure."

__________________________________________________

Against stupidity the gods themselves contend in vain. -- Friedrich Schiller
Stop, children, what's that sound? Everybody look what's going down. -- Stephen Stills

Jeff Moden SSC Guru Points: 1004339 More actions · Answer 8

Lynn Pettis (7/24/2009)
.,.,., why not let Jeff post the url? Others, like myself, may just benefit ... oh, you want to keep us in the dark, like mushrooms! 😛

Agh... he's just kidding...

http://www.sqlmag.com/article/articleid/93462/sql_server_blog_93462.html identifies the problem

http://www.sqlmag.com/Articles/ArticleID/93606/93606.html identifies the solution

Anyone got some steak to go with those shrooms? 😛

--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)

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 9

Jeff Moden (7/24/2009)
Lynn Pettis (7/24/2009)
.,.,., why not let Jeff post the url? Others, like myself, may just benefit ... oh, you want to keep us in the dark, like mushrooms! 😛
Agh... he's just kidding...
http://www.sqlmag.com/article/articleid/93462/sql_server_blog_93462.html identifies the problem
http://www.sqlmag.com/Articles/ArticleID/93606/93606.html identifies the solution
Anyone got some steak to go with those shrooms? 😛

First, like duh... I know that.

Second, I actually don't appreciate mushrooms, so I usually don't eat them unless my wife has cooked with them and chopped them small.

Chand00 SSCertifiable Points: 6466 More actions · Answer 10

Hi,

Thanks a lot Jeff and Lynn. It worked very well.

[font="Verdana"]Thanks
Chandra Mohan[/font]

Jeff Moden SSC Guru Points: 1004339 More actions · Answer 11

You bet, Chandra... thanks for the feedback.

--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)