Coalesce and Conversion

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Coalesce and Conversion

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Sean Lange

Posted Tuesday, January 08, 2013 7:20 AM

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Good question Tom. Good to have a refresher on these things from time to time.

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Post #1404232

Stewart "Arturius" Campbell

Posted Tuesday, January 08, 2013 8:25 AM

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Tripped myself on this one.
Thanks Tom, learned something today, so I guess that makes it worthwhile

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Rob Schripsema

Posted Tuesday, January 08, 2013 9:14 AM

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Excellent question, and great explanation! Thanks!

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Post #1404316

john.arnott

Posted Tuesday, January 08, 2013 10:32 AM

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How annoying. You made me think! ;)

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.

Post #1404373

Revenant

Posted Tuesday, January 08, 2013 12:07 PM

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A really good QotD. Thanks, Tom!

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Lokesh Vij

Posted Tuesday, January 08, 2013 10:07 PM

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Very nice question Tom. Learnt something new today Smile

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Post #1404540

jvac

Posted Tuesday, January 08, 2013 10:20 PM

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thanks good and very tough question!

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Post #1404541

sqlnaive

Posted Wednesday, January 09, 2013 12:01 AM

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Great question, must say. +1

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Raghavendra Mudugal

Posted Wednesday, January 09, 2013 7:03 AM

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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
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Dana Medley

Posted Wednesday, January 09, 2013 7:35 AM

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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. BigGrin

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