Jeff Moden

Forum Replies Created

Viewing 15 posts - 41,416 through 41,430 (of 59,067 total)

RE: Best Practice: How often to reboot SQL server?

GSquared (10/20/2009)
Reboot when you have to, never otherwise.
I'll second that.
--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 20, 2009 at 10:32 pm

#1068661
RE: What table design is better ?

Option "A" is known as a "Slowly Changing Dimension Type 2" and, if I recall correctly, Option "B" is "Type 1". I prefer option "A" as I don't hav...
--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 20, 2009 at 10:25 pm

#1068659
RE: Measuring IO performance before and after moving tempdb

I'm not so sure that's true, Steve. Just like with Log Files on full recovery DB's, a time honored server performance "trick" is to move TempDB to it's own...
--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 20, 2009 at 10:14 pm

#1068658
RE: Problem with Drop & reccreate a staging table

The answer is simple on this one... don't use a permanent table as a staging table... use a Temp Table.
--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 20, 2009 at 10:06 pm

#1068657
RE: Using synonyms to redirect queries

Elliott W (10/20/2009)
Jeff, I think I can answer that one myself.. Low latency and lots of data. Apparently it takes like 40 minutes to re-index the data.. ...
--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 20, 2009 at 10:03 pm

#1068656
RE: Need help with a query to concatenate records

Bob has shown the way with the best performance in 2k5. Lemme show you what you did wrong with yours....
CREATE FUNCTION dbo.fnConcatTest (@PID INT)RETURNS VARCHAR(8000)
AS
BEGIN
DECLARE @Return VARCHAR(8000)
SELECT...
--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 20, 2009 at 9:49 pm

#1068652
RE: Looking for Input on Use of WHILE Loop In Job Step

Heh... like I said...
I know that the use of cursors and loops for flow control is an acceptable use...
... and I agree with all the reasons Bob stated for this...
--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 20, 2009 at 9:36 pm

#1068650
RE: Looking for Input on Use of WHILE Loop In Job Step

I know that the use of cursors and loops for flow control is an acceptable use but... I just can't bring myself to write one if there is another way...
--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 20, 2009 at 9:12 pm

#1068640
RE: Using synonyms to redirect queries

Ummmm.... why build the reporting view at all? Build the table so it looks like the view, index it correctly, and have synonym pointing at the table in...
--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 20, 2009 at 6:05 pm

#1068619
RE: Multi/Nested CONVERT's

Heh... gettin' old... Seth beat me. Same idea though...
SELECT DATEADD(ss,1,DATEADD(mm,DATEDIFF(mm,-16,GETDATE())-1,-16))
--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 20, 2009 at 5:55 pm

#1068615
RE: optimize queries

You shouldn't have to partition anything for a 7k row table because it won't help when returning all rows and columns.
Something is dreadfully wrong if it takes that long 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 20, 2009 at 5:37 pm

#1068609
RE: Need help with a query to concatenate records

A "search" on this site is still one of the best ways to find what you need...
http://www.sqlservercentral.com/search/?cx=000517265726492607871%3Agqdiynsp-y0&cof=FORID%3A9&q=concatenate&sa=Go#1257
When you run across one of the many articles or scripts on this subject,...
--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 20, 2009 at 5:32 pm

#1068605
RE: extact last 3 characters from a string

That will certainly work and if you don't have many rows, you probably won't notice, but REVERSE is comparatively very expensive... it would be computationally cheaper if you just used...
--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 20, 2009 at 5:51 am

#1068104
RE: Concatenating Rows

No problem... just remember that it leaves a trailing comma and does the whole table unless you add a criteria.
--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 20, 2009 at 5:44 am

#1068101
RE: Get index scan on zip code radius query - not sure why.. ! ?

matt6749 (10/19/2009)
Ok thanks Jeff - I am going to try, and try hard, to implement multiple CTEs like you suggest.. (gulp, wish me luck!) - Matt
You'll do fine... 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 20, 2009 at 5:40 am

#1068100

Viewing 15 posts - 41,416 through 41,430 (of 59,067 total)