SQL Clone
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


Date Conversions


Date Conversions

Author
Message
Cliff Jones
Cliff Jones
SSCertifiable
SSCertifiable (6.8K reputation)SSCertifiable (6.8K reputation)SSCertifiable (6.8K reputation)SSCertifiable (6.8K reputation)SSCertifiable (6.8K reputation)SSCertifiable (6.8K reputation)SSCertifiable (6.8K reputation)SSCertifiable (6.8K reputation)

Group: General Forum Members
Points: 6813 Visits: 3648
Very interesting behavior. Thanks for the question.
EL Jerry
EL Jerry
SSCertifiable
SSCertifiable (5.1K reputation)SSCertifiable (5.1K reputation)SSCertifiable (5.1K reputation)SSCertifiable (5.1K reputation)SSCertifiable (5.1K reputation)SSCertifiable (5.1K reputation)SSCertifiable (5.1K reputation)SSCertifiable (5.1K reputation)

Group: General Forum Members
Points: 5109 Visits: 1346
Nice question, answers were hard to read, but in the end I got my point.

"El" Jerry.

"El" Jerry.

"A watt of Ottawa" - Gerardo Galvan

To better understand your help request, please follow these best practices.
Paul White
Paul White
SSC Guru
SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)

Group: General Forum Members
Points: 80334 Visits: 11400
When you run the follow script in SSMS, which of the outputs do you expect to be returned?

Surely all answers are right, unless chooses an unexpected answer? :-P

I was aware of the point the question was looking to make, but couldn't be bothered fighting through the text to prove it so picked one at random. I got it 'wrong'.



Paul White
SQLPerformance.com
SQLblog.com
@SQL_Kiwi
baabhu
baabhu
SSCarpal Tunnel
SSCarpal Tunnel (4.1K reputation)SSCarpal Tunnel (4.1K reputation)SSCarpal Tunnel (4.1K reputation)SSCarpal Tunnel (4.1K reputation)SSCarpal Tunnel (4.1K reputation)SSCarpal Tunnel (4.1K reputation)SSCarpal Tunnel (4.1K reputation)SSCarpal Tunnel (4.1K reputation)

Group: General Forum Members
Points: 4139 Visits: 1218
The posert should have limited to only two options.

even though we knew the answer very difficult to spot on from the options.

Seems like a test for the eyes rather than SQLserver. :-D
Lynn Pettis
Lynn Pettis
SSC Guru
SSC Guru (225K reputation)SSC Guru (225K reputation)SSC Guru (225K reputation)SSC Guru (225K reputation)SSC Guru (225K reputation)SSC Guru (225K reputation)SSC Guru (225K reputation)SSC Guru (225K reputation)

Group: General Forum Members
Points: 225690 Visits: 40422
I get it, I should have used the DATE data type instead of DATETIME2 for the question so I could have left off the time portion on the answers. How about everyone just quit complaining about that, this wasn't a test for the eyes.

I found out about a behaviour regarding datetime conversions that existed starting in SQL Server 2008 with the addition of several new date/time data types that I wasn't aware of and that wasn't even described why it was happening and I dug into it more. I thought it would be a great QotD and submitted it.

Also, for the code as presented, there is only one correct answer.

The reason I didn't give only 2 possibilities is that I didn't want it to be a 50/50 guess. I was trying to make it a bit more challenging than that.

Cool
Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

SQL Musings from the Desert Fountain Valley SQL (My Mirror Blog)
SQLRNNR
SQLRNNR
SSC Guru
SSC Guru (145K reputation)SSC Guru (145K reputation)SSC Guru (145K reputation)SSC Guru (145K reputation)SSC Guru (145K reputation)SSC Guru (145K reputation)SSC Guru (145K reputation)SSC Guru (145K reputation)

Group: General Forum Members
Points: 145451 Visits: 18652
Koen Verbeeck (6/5/2012)
Very interesting question, but those answers were hard to read :-)


+10

Jason...AKA CirqueDeSQLeil
_______________________________________________
I have given a name to my pain...MCM SQL Server, MVP
SQL RNNR
Posting Performance Based Questions - Gail Shaw
Learn Extended Events

Carla Wilson-484785
Carla Wilson-484785
Hall of Fame
Hall of Fame (3.1K reputation)Hall of Fame (3.1K reputation)Hall of Fame (3.1K reputation)Hall of Fame (3.1K reputation)Hall of Fame (3.1K reputation)Hall of Fame (3.1K reputation)Hall of Fame (3.1K reputation)Hall of Fame (3.1K reputation)

Group: General Forum Members
Points: 3054 Visits: 1951
AndyK-565224 (6/6/2012)
I would like to hear a SQL philosopher/historian explain how this situation came about. It seems such a violation of language orthogonality - lying in wait to create bad data.


I agree - it seems like a bad idea.

Found this chart on BOL "Using Date and Time Data"
[url=http://msdn.microsoft.com/en-us/library/ms180878(v=sql.100).aspx][/url]

There are some subtle format differences that seem very arbitrary to me.
Paul White
Paul White
SSC Guru
SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)SSC Guru (80K reputation)

Group: General Forum Members
Points: 80334 Visits: 11400
Carla Wilson-484785 (6/8/2012)
There are some subtle format differences that seem very arbitrary to me.

It's often a backward-compatibility thing.



Paul White
SQLPerformance.com
SQLblog.com
@SQL_Kiwi
jlennartz
jlennartz
Ten Centuries
Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)

Group: General Forum Members
Points: 1152 Visits: 1197
Why wouldn't all selects error out as in the example in MS189491 when the set dateformat's used both end with year but all the dates start with the year?
sjimmo
sjimmo
SSCertifiable
SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)SSCertifiable (7.4K reputation)

Group: General Forum Members
Points: 7389 Visits: 2913
Good way to return from vacation. Good question, but reading the answers was a new experience in eyeball manipulationCrazy

Steve Jimmo
Sr DBA
“If we ever forget that we are One Nation Under God, then we will be a Nation gone under." - Ronald Reagan
Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum








































































































































































SQLServerCentral


Search