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Windowing Ranges


Windowing Ranges

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Thomas Abraham
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Mighty (12/9/2013)
Maybe worthwhile to mention that this functionality was introduced in SQL Server 2012.


Yes! Had a heck of a time figuring it out, UNTIL I realized it must be something new for 2012. Then all became clear.

Thanks for the question.

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Straightforward and nice - thanks, Steve!
Ken Wymore
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Nice question Steve! I wish we would upgrade to 2012 around here so we could use these new functions.

Good stuff.

Ken
Marcia J
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Any examples of how these would be used?
WayneS
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KWymore (12/9/2013)
Nice question Steve! I wish we would upgrade to 2012 around here so we could use these new functions.

Good stuff.

Ken


The upgrades to the OVER clause alone are, IMHO, worth the upgrade.

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marcia.j.wilson (12/9/2013)
Any examples of how these would be used?

Running totals. Traditionally done with slow set-based code, with a (relatively!) fast cursor, or with some dangerous unsupported side effect of a language feature.

In SQL Server 2012, very simple:

SELECT   SalesPersonName,
SaleDate,
Amount,
SUM(Amount) OVER (PARTITION BY SalesPersonName
ORDER BY SaleDate
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal
FROM YourTable
ORDER BY SalesPersonName, SaleDate;




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Marcia J
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Hugo Kornelis (12/9/2013)
marcia.j.wilson (12/9/2013)
Any examples of how these would be used?

Running totals. Traditionally done with slow set-based code, with a (relatively!) fast cursor, or with some dangerous unsupported side effect of a language feature.

In SQL Server 2012, very simple:

SELECT   SalesPersonName,
SaleDate,
Amount,
SUM(Amount) OVER (PARTITION BY SalesPersonName
ORDER BY SaleDate
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal
FROM YourTable
ORDER BY SalesPersonName, SaleDate;



Thanks. That helped me get a better picture of why you would use this.
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WayneS (12/9/2013)
KWymore (12/9/2013)
Nice question Steve! I wish we would upgrade to 2012 around here so we could use these new functions.

Good stuff.

Ken


The upgrades to the OVER clause alone are, IMHO, worth the upgrade.


+1



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Ed Wagner
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Love the access to other rows in the set. Still waiting for 2012. Sigh.


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Ken Wymore
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Ed Wagner (12/10/2013)
Love the access to other rows in the set. Still waiting for 2012. Sigh.


I was doing some BI work in QlikView a couple years ago and they had some great built-in analytic functions for lead, lag, percent_rank and a few others. Saved me a bunch of coding. Since that application did everything in memory, access to other rows in the set was a built in feature. Very handy.

Supposedly upgrading to 2012 next year. We shall see...:-)
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