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SELECT TOP


SELECT TOP

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peter.skoglund
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Comments posted to this topic are about the item SELECT TOP
SQLRNNR
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Thanks for the question.



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Hardy21
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Nice question.
MSDN link for the same: http://msdn.microsoft.com/en-us/library/ms188385(v=SQL.105).aspx

Thanks
Stewart "Arturius" Campbell
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Good "Back to basics" question.
thanks

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I'm confused: the correct answer is the row that is returned "most of the time"?
If yes, then it isn't a good question, as other answers might be possible. If you can receive other rows with TOP 1, then you should have added an 'It depends' answer.

For the rest: nice question :-) (also good layout and structure of code)


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Carlo Romagnano
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da-zero (12/21/2010)
I'm confused: the correct answer is the row that is returned "most of the time"?
If yes, then it isn't a good question, as other answers might be possible. If you can receive other rows with TOP 1, then you should have added an 'It depends' answer.

For the rest: nice question :-) (also good layout and structure of code)

I agree with you: no "order by", no default sequence.

But what does this mean?
Always use the top with an ORDER BY clause!

Syntax should be appropriate to the hints.

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paul s-306273
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Nice question and layout, but surely the answer should be 'cannot be determined' without the 'order by' clause.
cengland0
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I didn't like this question. I did get it right because I figured it would return 'Ann' most of the time but as the author said, it cannot be guaranteed without an order by clause. There should have been an option that said "Unknown" or "Cannot be 100% certain".
paul.knibbs
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I was expecting the answer to be something along the lines of things are always returned in the clustered index order (which would obviously raise questions in any case), but then it's talking about it being indeterminate--if that's the case, why isn't there an "it depends" answer? Question implies one thing, answer says another!
jts2013
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Definitely should be "it depends"... I think the question is trying to show what happens when you add a clustered index to a heap and how the data is likely to get re-organised as the index is built.
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