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


Coalesce and Conversion


Coalesce and Conversion

Author
Message
Sean Lange
Sean Lange
SSC Guru
SSC Guru (113K reputation)SSC Guru (113K reputation)SSC Guru (113K reputation)SSC Guru (113K reputation)SSC Guru (113K reputation)SSC Guru (113K reputation)SSC Guru (113K reputation)SSC Guru (113K reputation)

Group: General Forum Members
Points: 113560 Visits: 18297
Good question Tom. Good to have a refresher on these things from time to time.

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs
Understanding and Using APPLY (Part 1)
Understanding and Using APPLY (Part 2)
Stewart "Arturius" Campbell
Stewart "Arturius" Campbell
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: 27467 Visits: 7549
Tripped myself on this one.
Thanks Tom, learned something today, so I guess that makes it worthwhile

____________________________________________
Space, the final frontier? not any more...
All limits henceforth are self-imposed.
“libera tute vulgaris ex”
Rob Schripsema
Rob Schripsema
SSCarpal Tunnel
SSCarpal Tunnel (4.2K reputation)SSCarpal Tunnel (4.2K reputation)SSCarpal Tunnel (4.2K reputation)SSCarpal Tunnel (4.2K reputation)SSCarpal Tunnel (4.2K reputation)SSCarpal Tunnel (4.2K reputation)SSCarpal Tunnel (4.2K reputation)SSCarpal Tunnel (4.2K reputation)

Group: General Forum Members
Points: 4213 Visits: 11042
Excellent question, and great explanation! Thanks!

Rob Schripsema
Propack, Inc.
john.arnott
john.arnott
SSCertifiable
SSCertifiable (5.6K reputation)SSCertifiable (5.6K reputation)SSCertifiable (5.6K reputation)SSCertifiable (5.6K reputation)SSCertifiable (5.6K reputation)SSCertifiable (5.6K reputation)SSCertifiable (5.6K reputation)SSCertifiable (5.6K reputation)

Group: General Forum Members
Points: 5644 Visits: 3059
How annoying. You made me think! Wink

I agree this was an excellent question and explanation. I do see that one minor correction could be needed to one example given, however. You say "...for example the numeric value 37.2 can be converted to an int (37)...". Did you actually mean that an INT (@i) could be converted to the higher precedence numeric type, as obviously could be the literal value 37.2? After all, the result of that coalesce is 37.2 and not 37.
Revenant
Revenant
SSCoach
SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)

Group: General Forum Members
Points: 17959 Visits: 5067
A really good QotD. Thanks, Tom!
Lokesh Vij
Lokesh Vij
SSCarpal Tunnel
SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)SSCarpal Tunnel (4.8K reputation)

Group: General Forum Members
Points: 4786 Visits: 1599
Very nice question Tom. Learnt something new today:-)

~ Lokesh Vij

Guidelines for quicker answers on T-SQL question
Guidelines for answers on Performance questions

Link to my Blog Post --> www.SQLPathy.com

Follow me @Twitter


jvac
jvac
SSC Rookie
SSC Rookie (40 reputation)SSC Rookie (40 reputation)SSC Rookie (40 reputation)SSC Rookie (40 reputation)SSC Rookie (40 reputation)SSC Rookie (40 reputation)SSC Rookie (40 reputation)SSC Rookie (40 reputation)

Group: General Forum Members
Points: 40 Visits: 136
thanks good and very tough question!

_______________________________________________________________
"The best way to prepare for programming is to write programs, and
to study great programs that other people have written." – Bill Gates

sqlnaive
sqlnaive
SSCrazy Eights
SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)SSCrazy Eights (8.9K reputation)

Group: General Forum Members
Points: 8871 Visits: 2774
Great question, must say. +1
Raghavendra Mudugal
Raghavendra Mudugal
SSCarpal Tunnel
SSCarpal Tunnel (4.6K reputation)SSCarpal Tunnel (4.6K reputation)SSCarpal Tunnel (4.6K reputation)SSCarpal Tunnel (4.6K reputation)SSCarpal Tunnel (4.6K reputation)SSCarpal Tunnel (4.6K reputation)SSCarpal Tunnel (4.6K reputation)SSCarpal Tunnel (4.6K reputation)

Group: General Forum Members
Points: 4620 Visits: 2958
Interesting question, thank you Tom.

(even kind of knowing the output for each select statement, it tempted me to challenge self and to prove it)

ww; Raghu
--
The first and the hardest SQL statement I have wrote- "select * from customers" - and I was happy and felt smart.
Dana Medley
Dana Medley
Hall of Fame
Hall of Fame (3.8K reputation)Hall of Fame (3.8K reputation)Hall of Fame (3.8K reputation)Hall of Fame (3.8K reputation)Hall of Fame (3.8K reputation)Hall of Fame (3.8K reputation)Hall of Fame (3.8K reputation)Hall of Fame (3.8K reputation)

Group: General Forum Members
Points: 3752 Visits: 1707
Thanks for the great question Tom. It really made me think; there were so many choices and it was so early in the morning. I can definitely say I'm awake now. :-D



Everything is awesome!
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