Jeff Moden

Forum Replies Created

Viewing 15 posts - 4,426 through 4,440 (of 59,069 total)

Reply To: How to remove duplicate value from the rows in sql

shasivashok wrote:
Hi Team,
I am retrieving files and file created date and file modified date from table based on the created date. All files are same file name. My output is...
--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)

October 26, 2021 at 8:39 pm

#3944761
Reply To: Index rebuild

First of all, if you've done a REBUILD on an index and you very quickly exceed 30% logical fragmentation, then you're ACTUALLY CREATING A PERFORMANCE ISSUE and it can be...
--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)

October 26, 2021 at 8:35 pm

#3944760
Reply To: Replace Numbers

ZZartin wrote:
Jeff Moden wrote:
While you guys are bantering, I hope it's your SSNs that the OP is going to obfuscate with this easily broken method. 😀
Don't worry I'm sure it's just...
--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)

October 26, 2021 at 12:28 am

#3944335
Reply To: A DateRange Table Valued function

Jonathan AC Roberts wrote:
Jeff Moden wrote:
Nice function, Jonathan. Well done!
Thank you Jeff, that's a great compliment coming from someone as experienced as you.
I just used the function to hammer out a solution to...
--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)

October 26, 2021 at 12:02 am

#3944334
Reply To: TSQL: Create dynamic partition DataRange

Let's try something a wee bit different and let's use a really nice tool written exactly for this type of thing. The tool was written by Jonathan Roberts, is a...
--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)

October 26, 2021 at 12:01 am

#3944333
Reply To: Burning Out

Great article but, having been there and done that, be REALLY careful that you don't (as my Grandmother used to say) "Jump from fat to fire" (reference to a cast...
--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)

October 25, 2021 at 9:09 pm

#3944289
Reply To: Replace Numbers

While you guys are bantering, I hope it's your SSNs that the OP is going to obfuscate with this easily broken method. 😀
--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)

October 25, 2021 at 6:09 pm

#3944235
Reply To: Partitioning and Indexes needed on huge table

The big thing for partitioning for me has nothing to do with queries. As Grant indicates, partitioning almost never improves performance. Even so called "partition elimination" is usually slower than...
--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)

October 25, 2021 at 5:56 pm

#3944230
Reply To: Identify what causes tempdb to increase

Johan Bijnens wrote:
SQL2005 doesn't have XE!
Check your default trace file or run a trace to figure it out !
Ah... thanks, Johan. Shows how much I use EE.
The problem with using...
--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)

October 25, 2021 at 12:23 pm

#3944043
Reply To: How to get YYYYMMDDHHMMSS

Thank you for the great feedback and the quote from BOL.
Now if we could get the OP to cough up the reason for wanting to do this task. 😀
--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)

October 24, 2021 at 6:30 pm

#3943810
Reply To: How to get YYYYMMDDHHMMSS

Bruin wrote:
This is getting the data I need, but not the format.
select replace(convert(varchar, getdate(),101),'/','') + replace(convert(varchar, getdate(),108),':','')
10212021102437
I want YYYYMMDD before the time portion.
Thanks.
Just out of sheer curiosity, why do you...
--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)

October 23, 2021 at 10:26 pm

#3943663
Reply To: How to get YYYYMMDDHHMMSS

A lot of the methods posed so far do the job but are actually relatively slow because of all the string manipulation using both concatenation and REPLACE. Using a nice...
--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)

October 23, 2021 at 7:33 pm

#3943642
Reply To: Replace Numbers

RonMexico wrote:
My goal is to replace the numbers 1-9 in a column with a different number. For this example the numbers would change to
1=7
2=3
3=9
4=1
5=4
6=2
7=5
8=6
9=8
I tried using the replace function shown...
--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)

October 23, 2021 at 5:44 pm

#3943631
Reply To: How to get YYYYMMDDHHMMSS

MMartin1 wrote:
Jeff Moden wrote:
p.s. Using VARCHAR with no length is one of those code smells that you might want to avoid.
It would default to varchar(30) , but still to wide for...
--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)

October 23, 2021 at 5:37 pm

#3943630
Reply To: TSQL: Create dynamic partition DataRange

Lidou123 wrote:
Any help please?
If you want faster help in the future, please see the first link in my signature line below for one of many different ways to post "Readily...
--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)

October 22, 2021 at 7:10 pm

#3943401

Viewing 15 posts - 4,426 through 4,440 (of 59,069 total)