On Fri, 29 Nov 2013 15:38:51 -0800
Hayden Livingston <halivings...@gmail.com> wrote:

> I want to find the 25th %ile latency for this rowset.
> 
> (A) How do I create a Percentile Query?

http://www.schemamania.org/sql/#rank.rows

Rank the rows, multiply the rank by 100, and divide by their count.
Choosing the 25th percentile is then just a WHERE clause.  

HTH.  

--jkl
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