Varchar and varchar2

From: Jeffrey Napolitano <jnapoli(at)setech(dot)com>
To: General Questions for PostgreSQL <pgsql-general(at)postgreSQL(dot)org>
Subject: Varchar and varchar2
Date: 1998-07-06 19:26:39
Message-ID: 35A124EF.E012E209@setech.com
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I've looked through the documentation, but I can't find the size of the
limit of varchar...?

All I found was in the User's Guide:

Character Type Storage Description
---------------------------------------------------
varchar(n) (4+n) bytes variable length with limit
---------------------------------------------------

What does 4+n bytes mean? And what is the limit?

Anyone? And is there support for varchar2?

Thanx.

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