Jeff Moden

Forum Replies Created

Viewing 15 posts - 8,761 through 8,775 (of 59,067 total)

Reply To: Primary Key and Clustered Index

nova wrote:
In my previous post I wasn't making any point at all about portability, which I agree is no necessary consideration in designing a database. My point was just about...
--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)

August 25, 2019 at 4:01 pm

#3674259
Reply To: deadlock issue

vsamantha35 wrote:
1. Why a unique non-clustered index ? why not just a non-clustered index for [NI_APPLIED_LOCK_SBL3R8]. Because I don't know the nature of the data if those columns has repeated...
--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)

August 25, 2019 at 3:35 pm

#3674258
Reply To: Primary Key and Clustered Index

nova wrote:
Business data belongs to nominated data controllers and data subjects. Data does not belong to database designers and developers and as a technology professional myself I try to keep...
--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)

August 25, 2019 at 1:52 pm

#3674251
Reply To: Importing Files in Parallel with SSIS

iposner wrote:
Rather than having a master package distribute the list of files to process, another approach is to give each package the rules it needs to process the subset 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)

August 25, 2019 at 3:16 am

#3674223
Reply To: How can I convert %5B and %5D to [ and ] in a string

Just my take on this... single and fairly short formula that does the replacements only once. This, of course, assumes that you'll always be working values where you want 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)

August 25, 2019 at 2:39 am

#3674222
Reply To: SSIS - Adding Columns to existing table and load data

sunshine wrote:
I am working in SSIS (Sql server version 2012) , I have a requirement to add two new columns to a destination table which already has five years 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)

August 25, 2019 at 1:35 am

#3674221
Reply To: deadlock issue
I think that three things need to be done before anything else....
1. Add an index to support the lookup for the update. It should be a unique index consisting 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)
August 25, 2019 at 1:24 am

#3674220
Reply To: Primary Key and Clustered Index

A part of the reason why I use IDENTITY instead of sequence is because IDENTITY IS much more difficult to update and it's flat out not supposed to ever 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)

August 24, 2019 at 11:47 pm

#3674217
Reply To: pre-validate csv to SQL load

Bruin wrote:
before loading csv to SQL is there a way to validate against table schema to catch potential data issues and row number
create a good file(records pass) and bad file(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)

August 24, 2019 at 4:50 am

#3674131
Reply To: deadlock issue

Actually, the code is doing one UPDATE and one DELETE.
The UPDATE needs an index on LOCK_GROUP_STR and ROWID_TABLE to make it fast.
The DELETE needs an index on just the LOCK_GROUP_STR...
--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)

August 24, 2019 at 2:49 am

#3674129
Reply To: using trigger for tracing

ScottPletcher wrote:
Of course bad triggers can be written. Bad stored procedures can also be written, but that doesn't mean we should quit writing stored procedures (agreed?). Yes, take great care...
--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)

August 23, 2019 at 5:45 pm

#3674048
Reply To: Index Usage

I'll have to say "oh, be careful now" and yell "It Depends"!
The presence of only "Seeks" in the usage stats must not be interpreted as something meaning "everything is great". ...
--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)

August 23, 2019 at 5:41 pm

#3674047
Reply To: Advice for a Rookie DBA

Sopheeyah wrote:
Also, what does it entail to be very successful in this field?
Tenacity, lots and lots of study, lots and lots of practice, and a whole lot of real life...
--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)

August 22, 2019 at 4:21 am

#3673354
Reply To: ColumnStore Indexes not releasing the Deleted Rows

TRACEY-320982 wrote:
Once you rebuild all partitions how do you find which partition to build, as I would think I don't want to rebuild all partitions every time as that would...
--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)

August 22, 2019 at 4:18 am

#3673352
Reply To: The First Rule

RonKyle wrote:
You go ahead and do your de duplication that will inevitably occur with some surrogate only keys. I've seen these results many times. I have yet to see 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)

August 22, 2019 at 3:49 am

#3673351

Viewing 15 posts - 8,761 through 8,775 (of 59,067 total)