Click here to monitor SSC
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


Incremental additions


Incremental additions

Author
Message
Praveen Goud Kotha
Praveen Goud Kotha
Old Hand
Old Hand (315 reputation)Old Hand (315 reputation)Old Hand (315 reputation)Old Hand (315 reputation)Old Hand (315 reputation)Old Hand (315 reputation)Old Hand (315 reputation)Old Hand (315 reputation)

Group: General Forum Members
Points: 315 Visits: 93
Comments posted to this topic are about the item Incremental additions

Praveen Goud
Hardy21
Hardy21
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: 1204 Visits: 1399
Nice question. Thanks

Thanks
srinibl
srinibl
Old Hand
Old Hand (384 reputation)Old Hand (384 reputation)Old Hand (384 reputation)Old Hand (384 reputation)Old Hand (384 reputation)Old Hand (384 reputation)Old Hand (384 reputation)Old Hand (384 reputation)

Group: General Forum Members
Points: 384 Visits: 98
Good question.
Thanks
Nakul Vachhrajani
Nakul Vachhrajani
SSCommitted
SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)

Group: General Forum Members
Points: 1823 Visits: 2126
Great question. Thank-you.

Thanks & Regards,
Nakul Vachhrajani.
http://nakulvachhrajani.com
Be courteous. Drive responsibly.

Follow me on
Twitter: @sqltwins
Google Plus: +Nakul
Koen Verbeeck
Koen Verbeeck
SSCoach
SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)

Group: General Forum Members
Points: 16380 Visits: 13199
Good question, but I've liked a little more explanation and if possible, a reference.



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

Member of LinkedIn. My blog at SQLKover.

MCSA SQL Server 2012 - MCSE Business Intelligence
Iulian -207023
Iulian -207023
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: 1198 Visits: 1226
Great question, thanks

Here is a reference to the compound operators: http://msdn.microsoft.com/en-us/library/cc645922.aspx

Regards,
Iulian
Nakul Vachhrajani
Nakul Vachhrajani
SSCommitted
SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)SSCommitted (1.8K reputation)

Group: General Forum Members
Points: 1823 Visits: 2126
I guess the subtle point is that SQL Server will NOT throw any syntax errors because ultimately what the user is making is a logical error.
It's one of those things that one would miss when writing code in a hurry, and then spend endless nights trying to figure out what went wrong.

Thanks & Regards,
Nakul Vachhrajani.
http://nakulvachhrajani.com
Be courteous. Drive responsibly.

Follow me on
Twitter: @sqltwins
Google Plus: +Nakul
Koen Verbeeck
Koen Verbeeck
SSCoach
SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)

Group: General Forum Members
Points: 16380 Visits: 13199
Iulian -207023 (10/29/2010)
Great question, thanks

Here is a reference to the compound operators: http://msdn.microsoft.com/en-us/library/cc645922.aspx

Regards,
Iulian


Thanks for the reference, but it still doesn't explain the question. In the question =+ is used, while the compound operator used in SQL Server is +=. I've done a little research, and it seems that a++ is the post-increment operator and ++a the pre-increment operator.

(see http://bytes.com/topic/c/answers/506780-difference-between-pre-increment-post-increment).

So it seems that the explanation of the question is wrong, as it states that the pre-increment operator is not used in SQL Server. SQL Server uses however a compound operator, meaning addition and assign, not incrementing the value. It still remains unknown to me why SQL Server ignores the + in =+ instead of giving a syntax error.



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

Member of LinkedIn. My blog at SQLKover.

MCSA SQL Server 2012 - MCSE Business Intelligence
Carlo Romagnano
Carlo Romagnano
Hall of Fame
Hall of Fame (3.6K reputation)Hall of Fame (3.6K reputation)Hall of Fame (3.6K reputation)Hall of Fame (3.6K reputation)Hall of Fame (3.6K reputation)Hall of Fame (3.6K reputation)Hall of Fame (3.6K reputation)Hall of Fame (3.6K reputation)

Group: General Forum Members
Points: 3598 Visits: 3232
So it seems that the explanation of the question is wrong, as it states that the pre-increment operator is not used in SQL Server. SQL Server uses however a compound operator, meaning addition and assign, not incrementing the value. It still remains unknown to me why SQL Server ignores the + in =+ instead of giving a syntax error.

Yes, explanation is wrong!
@a=+@b means simply that you assign an +(expression) to @a.
+ is unary operator: http://msdn.microsoft.com/en-us/library/aa276846(SQL.80).aspx
Hardy21
Hardy21
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: 1204 Visits: 1399
Carlo Romagnano (10/29/2010)
So it seems that the explanation of the question is wrong, as it states that the pre-increment operator is not used in SQL Server. SQL Server uses however a compound operator, meaning addition and assign, not incrementing the value. It still remains unknown to me why SQL Server ignores the + in =+ instead of giving a syntax error.

Yes, explanation is wrong!
@a=+@b means simply that you assign an +(expression) to @a.
+ is unary operator: http://msdn.microsoft.com/en-us/library/aa276846(SQL.80).aspx


Thanks for the link. Hence, @a =+ @b means @b value assign to @a so @a = -21.

Thanks
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