What is an RT index?

From: "Rada Chirkova" <chirkova(at)csc(dot)ncsu(dot)edu>
To: <pgsql-general(at)postgresql(dot)org>
Subject: What is an RT index?
Date: 2003-10-27 22:37:22
Message-ID: CMEOKOMDENAFPGPJBBJDAECNCOAA.chirkova@csc.ncsu.edu
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Hi, could you help me? I am reading documentation on RelOptInfo in version
7.3.4 and have come across "RT indexes" in the explanation. Could you tell
me what they are? They are mentioned in file src/include/nodes/relation.h in
version 7.3.4. They seem to be some kind of unique identifiers of relations,
but I have not been able to find a reference to them in PostgreSQL
documentation.

Many thanks,

Rada

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