delete non-unique

From: henlin <henlin(at)yandex(dot)ru>
To: pgsql-novice(at)postgresql(dot)org
Subject: delete non-unique
Date: 2007-04-25 09:08:15
Message-ID: op.trb0x7xagebjvh@server22.shreyasaratov.local
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hello.

i need to clean up some tables: from several equal rows keep only one
(like `sort -u`)

aaa bbb - do not delete
aaa bbb - delete
aaa bbb - delete

fenx
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