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Selecting top N percent of records.

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To: pgsql-general <pgsql-general@xxxxxxxxxxxxxx>
Subject: Selecting top N percent of records.
From: Tim Uckun <timuckun@xxxxxxxxx>
Date: Mon, 18 Oct 2010 12:33:54 +1300

Is there a way to select the top 10% of the values from a column?

For example the top 10% best selling items where number of sales is a column.

Thanks.

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