Trigger SQL script execution after DROP EXTENSION

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From: amul sul <sul_amul@yahoo.co.in>
To: pgsql-sql@postgresql.org <pgsql-sql@postgresql.org>
Subject: Trigger SQL script execution after DROP EXTENSION
Date: Mon, 17 Feb 2014 13:52:48 +0800 (SGT)
Message-ID: <1392616368.60045.YahooMailNeo@web193501.mail.sg3.yahoo.com> (raw)
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Hello ALL,

I need little help regarding DROP EXTENSION.

Can it will be possible to execute some SQL command automatically after DROP EXTENSION ?

In my EXTENSION, I am changing some pg_catalog tuples, I want to restore it when my EXTENSION is dropped. 

Thanks in advance, any help or suggestion is appreciated.
 
Regards,

Amul Sul

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