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


Predict the outcome of the SQL statements


Predict the outcome of the SQL statements

Author
Message
bazzkar
bazzkar
SSC-Enthusiastic
SSC-Enthusiastic (174 reputation)SSC-Enthusiastic (174 reputation)SSC-Enthusiastic (174 reputation)SSC-Enthusiastic (174 reputation)SSC-Enthusiastic (174 reputation)SSC-Enthusiastic (174 reputation)SSC-Enthusiastic (174 reputation)SSC-Enthusiastic (174 reputation)

Group: General Forum Members
Points: 174 Visits: 72
Comments posted to this topic are about the item Predict the outcome of the SQL statements
happycat59
happycat59
SSCarpal Tunnel
SSCarpal Tunnel (4.7K reputation)SSCarpal Tunnel (4.7K reputation)SSCarpal Tunnel (4.7K reputation)SSCarpal Tunnel (4.7K reputation)SSCarpal Tunnel (4.7K reputation)SSCarpal Tunnel (4.7K reputation)SSCarpal Tunnel (4.7K reputation)SSCarpal Tunnel (4.7K reputation)

Group: General Forum Members
Points: 4727 Visits: 3215
I would prefer that you gave a better answer/reason for the result of the first expression being 1 instead of 2. The reason is not simply because of the use of the DECIMAL datatype. It is because no precision and scale was specified. The default precision is 18 and the default scale is 0. This results in rounding to zero decimal places (i.e. it effectively results in an integer). In this situation, the floor function simply returns the value (it doesn't need to do anything since the DECIMAL (18,0) value is the same as the result of the floor function).



Saurabh Dwivedy
Saurabh Dwivedy
Mr or Mrs. 500
Mr or Mrs. 500 (532 reputation)Mr or Mrs. 500 (532 reputation)Mr or Mrs. 500 (532 reputation)Mr or Mrs. 500 (532 reputation)Mr or Mrs. 500 (532 reputation)Mr or Mrs. 500 (532 reputation)Mr or Mrs. 500 (532 reputation)Mr or Mrs. 500 (532 reputation)

Group: General Forum Members
Points: 532 Visits: 340
Thanks for explaining it clearly. I had missed this point.

Saurabh Dwivedy
___________________________________________________________

My Blog: http://tinyurl.com/dwivedys

For better, quicker answers, click on the following...
http://www.sqlservercentral.com/articles/Best+Practices/61537

Be Happy!
rals
rals
SSCrazy
SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)SSCrazy (2.2K reputation)

Group: General Forum Members
Points: 2169 Visits: 843
Yes Happycat...Good Explanation.

Select ceiling(Convert(decimal(2,1),1.09)) will give you the result 2.

Regards,
Rals
.

Michael Riemer
Michael Riemer
SSCrazy
SSCrazy (2.8K reputation)SSCrazy (2.8K reputation)SSCrazy (2.8K reputation)SSCrazy (2.8K reputation)SSCrazy (2.8K reputation)SSCrazy (2.8K reputation)SSCrazy (2.8K reputation)SSCrazy (2.8K reputation)

Group: General Forum Members
Points: 2835 Visits: 638
Thanks for the better explanation of the Decimal function, as I was very confused about that one statement!

Intersting question though.
DugyC
DugyC
Ten Centuries
Ten Centuries (1.4K reputation)Ten Centuries (1.4K reputation)Ten Centuries (1.4K reputation)Ten Centuries (1.4K reputation)Ten Centuries (1.4K reputation)Ten Centuries (1.4K reputation)Ten Centuries (1.4K reputation)Ten Centuries (1.4K reputation)

Group: General Forum Members
Points: 1418 Visits: 779
Thanks happycat for the detailed explanation, makes perfect sense now.

_____________________________________________________________________
"The difficult tasks we do immediately, the impossible takes a little longer"
Koen Verbeeck
Koen Verbeeck
One Orange Chip
One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)

Group: General Forum Members
Points: 27165 Visits: 13268
Nice question, but the explanation could be better, as Happycat already demonstrated.


How to post forum questions.
Need an answer? No, you need a question.
What’s the deal with Excel & SSIS?
My blog at SQLKover.

MCSE Business Intelligence - Microsoft Data Platform MVP
Daniel Bowlin
Daniel Bowlin
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: 4082 Visits: 2629
Great follow on explanation. Thanks.
Steve Jones
Steve Jones
SSC Guru
SSC Guru (61K reputation)SSC Guru (61K reputation)SSC Guru (61K reputation)SSC Guru (61K reputation)SSC Guru (61K reputation)SSC Guru (61K reputation)SSC Guru (61K reputation)SSC Guru (61K reputation)

Group: Administrators
Points: 61885 Visits: 19099
Added a bit to the explanation, as per Happycat59

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
My Blog: www.voiceofthedba.com
SQLRNNR
SQLRNNR
SSC-Dedicated
SSC-Dedicated (31K reputation)SSC-Dedicated (31K reputation)SSC-Dedicated (31K reputation)SSC-Dedicated (31K reputation)SSC-Dedicated (31K reputation)SSC-Dedicated (31K reputation)SSC-Dedicated (31K reputation)SSC-Dedicated (31K reputation)

Group: General Forum Members
Points: 31992 Visits: 18551
Thanks for the question.



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

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