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count on transaction ID

From: ddgs <gsmaths(at)gmail(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: count on transaction ID
Date: 2012-03-09 15:30:29
Message-ID: 1331307029713-5550894.post@n5.nabble.com (view raw or flat)
Thread:
Lists: pgsql-performance
It is a discussion about the transaction ID wraparound in PostgreSQL.
However, what is the fundamental definition if transaction ID.
select * from table where ID=1:10000   
it is consider as one transaction or 10000 transactions.

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