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Posted Wednesday, September 4, 2013 11:07 AM


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Show a series of start and stop times, listed for a group of people. calculate the elapsed times (or dates) and order them.

create table Runners
( runnerid int
, timemark time
)

insert runners (runnerid, timemark)
values (1, '12:00')
, (2, '12:00')
, (3, '12:00')
, (4, '12:00')
, (1, '12:15')
, (2, '12:17')
, (3, '12:16')
, (4, '12:15')








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Post #1491445
Posted Wednesday, September 4, 2013 6:30 PM


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Will each runner have at most 2 entries?

If only one entry (start time), then what would you like to see for elapsed time?

If more than 2, does the latest time count as the end time?

And what if it's a marathon that starts at 23:00 and runs over to the next day?



My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
Post #1491594
Posted Wednesday, September 4, 2013 6:38 PM


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Feel free to handle this as a couple pieces, perhaps in different ways.

For the first, let's say two times for each runner, could cross days.

If you want to tackle a second, make it more open ended. allow for errors, or assume there are splits and the last time is the end time.







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Forum Etiquette: How to post data/code on a forum to get the best help
Post #1491596
Posted Wednesday, September 4, 2013 7:07 PM


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I'll give it a look this weekend.


My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
Post #1491605
Posted Wednesday, September 4, 2013 7:21 PM


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Thanks, and let me know.






Follow me on Twitter: @way0utwest

Forum Etiquette: How to post data/code on a forum to get the best help
Post #1491608
Posted Friday, September 6, 2013 8:32 PM


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I've made a submission.

I hope it's what you were looking for and more importantly I hope I didn't miss some kind of trick part of the question.



My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
Post #1492467
Posted Tuesday, September 10, 2013 6:38 PM


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Interesting that this related thread should appear just now:

http://www.sqlservercentral.com/Forums/Topic1492737-3077-1.aspx?Update=1



My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
Post #1493408
Posted Monday, September 16, 2013 7:44 AM


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Thanks, I'll look it over this week.






Follow me on Twitter: @way0utwest

Forum Etiquette: How to post data/code on a forum to get the best help
Post #1495079
Posted Monday, September 16, 2013 6:52 PM


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I see you accepted it now for publication. That's cool!

I noticed that I misspelled "Spackle" as "Spacklet" in the title. I hope you can correct that before publication.

I don't want to mess with it myself now that it's been accepted (don't know what would happen to the status).



My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
Post #1495342
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