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SubQuery


SubQuery

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Stewart "Arturius" Campbell
Stewart "Arturius" Campbell
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Thanks for the question, Jason
I actually quite enjoyed analysing this from all angles.

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Kwex
Kwex
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Nice question ... interesting to learn something new too.
Toreador
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Got it right, even though the correct answer isn't listed. But I guessed rightly that the author assumed we all use US date formats ;-)
Britt Cluff
Britt Cluff
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Tough question with the amount of T-SQL to review, but I did get it correct. I think it was more luck than anything.

http://brittcluff.blogspot.com/
Thomas Abraham
Thomas Abraham
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Thanks. Got it right - but almost went for the first instance of the name change. Good thing I kept "parsing". Thanks for the lesson!

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palotaiarpad
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Nice question! Thanks!
SQLRNNR
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tommyh (9/19/2011)

JOIN (SELECT StudentId as StudentNumber, max(RequestNbr) as RequestNb
FROM Request
...
GROUP BY StudentId) as Latest (StudentId, RequestNbr)
ON Request.StudentId = Latest.StudentId
AND Request.RequestNbr = Latest.RequestNbr



Just to clearify. The whole point was to point out that the bold parts dont match and that SQL instead is using the italic names in the join?

If above is true then read on... otherwise ignore:
I got the answer right for all the wrong reasons. I simply didnt see the change in the names. And it took one heck off a time to see the change in the names. When i first read the question i was so sure it would be something odd about the DATE datatype (since one answer had timeportion in it) or something with the MAX in the subquery. So i focused on that but couldnt find anything odd about it. So that left me with only one answer. Which was the right answer.

PS Im not being sarcastic or anything. I for one learned something... if my assumption is correct. Its just that in this case i feel like the point was drowned in code that wasnt relevant. Though atleast it made me think ALOT :-D

/T


yes - pretty much the whole point. And yes - it was a lot of code.



Jason AKA CirqueDeSQLeil
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stewartc-708166 (9/19/2011)
Thanks for the question, Jason
I actually quite enjoyed analysing this from all angles.


Thanks Stewart - glad you liked it.



Jason AKA CirqueDeSQLeil
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Toreador (9/19/2011)
Got it right, even though the correct answer isn't listed. But I guessed rightly that the author assumed we all use US date formats ;-)


I should have included that set option in the query.



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Thomas Abraham (9/19/2011)
Thanks. Got it right - but almost went for the first instance of the name change. Good thing I kept "parsing". Thanks for the lesson!


Glad you got it right and learned:-D



Jason AKA CirqueDeSQLeil
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