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Top 20 %

Top 20 %

(OP)
Hi all,

Can any one give me a breif idea that how to calculate top 20 % of the values.

I have stores which has got sales per year and i would like to get only top 20 % of the stores.

I would greatly apreciate the help

Thanks a lot

RE: Top 20 %

To get the TOP 20% of rows according to your WHERE clause it is

SELECT TOP 20 PERCENT stores

Just new to TD but I think this should give you what your after

RE: Top 20 %

2
select *
from tab
qualify
percent_rank() over (order by sales desc) <= 0.2

Easy to enhance with PARTITION BY, e.g.
percent_rank() over (order by sales desc partition by year) <= 0.2

to get top 20% per year...

Dieter

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