Jeff Moden

Forum Replies Created

Viewing 15 posts - 44,026 through 44,040 (of 59,101 total)

RE: Detect duplicate rows - with a twist

Scott Roberts (4/27/2009)
While I would completely agree that cursors are "significantly harmful", I'm not yet convinced that they are "no longer necessary".
Skepticism is certainly understood, especially on the types...
--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)

April 27, 2009 at 9:55 pm

#984823
RE: Special Characters

jim.rasmussen (4/27/2009)
I have a filed of varchar the holds names of companies. Like 'A & B Cleaners'. What I what to do is to select this.. 'ABClea'. How can I...
--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)

April 27, 2009 at 7:46 pm

#984804
RE: Perform math on string

GSquared (4/27/2009)
To deal with times that don't have enough leading zeroes, you can either padd the string, or you can reverse it. Either one works.
As is usually the case,...
--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)

April 27, 2009 at 7:28 pm

#984803
RE: Solving the “Running Totals” Problem in SQL Server 2005 with Partitioned Tables

Actually, it only looked like the ORDER BY method worked in my article. It wasn't the ORDER BY that made it work. Of course, I'm just a day...
--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)

April 27, 2009 at 7:16 pm

#984801
RE: Solving the "Running Total" & "Ordinal Rank" Problems in SS 2k/2k5

Johan,
Run the first test using the clustered index as it is. Then, drop the clustered index and add a new one based on some other columns. Run your...
--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)

April 27, 2009 at 7:12 pm

#984799
RE: There Must Be 15 Ways To Lose Your Cursors… Part 2: Just Put It in a S

Andrew L. Smith (4/27/2009)
Barry:
I agree with this for the most part, but have an exception that I would like to see if you have an answer for. For example, I...
--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)

April 27, 2009 at 6:49 pm

#984796
RE: Performance issue with tally solution

Lynn Pettis (4/27/2009)
Flo...
Since there was no production problem I had, after this input I could show my chief some really great new things and it causes that some parts of...
--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)

April 27, 2009 at 6:42 pm

#984794
RE: Performance issue with tally solution

Florian Reischl (4/27/2009)
Hi Adam
The String Enumerator (I just called it "String Enumerator" for better understanding what it does) performs very good! Especially for more rows. I just tried with some...
--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)

April 27, 2009 at 6:36 pm

#984793
RE: Performance issue with tally solution

Adam Machanic (4/27/2009)
Hi all,
I have posted a more scalable SQLCLR string split method here:
http://sqlblog.com/blogs/adam_machanic/archive/2009/04/26/faster-more-scalable-sqlclr-string-splitting.aspx
Thanks to Paul White for pointing me to this thread. Please consider testing all of these...
--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)

April 27, 2009 at 6:30 pm

#984792
RE: There Must Be 15 Ways To Lose Your Cursors… Part 2: Just Put It in a S

And, sorry... I read past it in the previous post. Lynn is correct... you can only execute extended stored procedures in a function. But what good would it...
--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)

April 27, 2009 at 6:07 pm

#984785
RE: There Must Be 15 Ways To Lose Your Cursors… Part 2: Just Put It in a S

JJ B (4/27/2009)
the vendor has designed their application to force a row-by-row approach because they don't know any better. So as you say, you don't really have a choice other...
--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)

April 27, 2009 at 6:02 pm

#984783
RE: There Must Be 15 Ways To Lose Your Cursors… Part 2: Just Put It in a S

Bruce W Cassidy (4/27/2009)
Look Ma, no cursor! (Yes Jeff, I know it's just as bad as a cursor... it's still row-by-row.)
I find the syntax of cursors annoying and...
--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)

April 27, 2009 at 5:57 pm

#984781
RE: There Must Be 15 Ways To Lose Your Cursors… Part 2: Just Put It in a S

Andy DBA (4/27/2009)
Thanks for the post! I bet that blows the function based approach out of the water!
Like anything else, it depends... I've seen it go both ways. ...
--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)

April 27, 2009 at 10:56 am

#984512
RE: There Must Be 15 Ways To Lose Your Cursors… Part 2: Just Put It in a S

Samuel Vella (4/27/2009)
Any cursor based operation can be replaced with an external application 😛
Absolutely true. But it's still amazing to me what people actually think they need a cursor...
--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)

April 27, 2009 at 10:53 am

#984509
RE: There Must Be 15 Ways To Lose Your Cursors… Part 2: Just Put It in a S

Samuel Vella (4/27/2009)
Jeff Moden (4/27/2009)
Heh... in SQL Server 2005, even that can be done without a cursor. We're just gonna have to wait for it in Barry's series of...
--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)

April 27, 2009 at 10:48 am

#984501

Viewing 15 posts - 44,026 through 44,040 (of 59,101 total)