Cluster table and order information

Hello,

From the documentation of CLUSTER table
(http://www.postgresql.org/docs/8.4/static/sql-cluster.html) I
understand that clustering can be achieved by re-creating the table
like this:

CREATE TABLE newtable AS
SELECT * FROM table ORDER BY columnlist;

My question is: If I upload with COPY a datafile which is already
correctly sorted, can I inform postgres of such order, so that no
clustering is necessary after the import? In other words, how can I
tell postgres that my file is order by this and that column?

Many thanks!

Dario

--

Dr. Dario Beraldi
Institute of Evolutionary Biology
University of Edinburgh
West Mains Road
Edinburgh EH9 3JT
Scotland, UK

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The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.