Scanner/Parser question - what does _P imply?

From: <korryd(at)enterprisedb(dot)com>
To: <pgsql-hackers(at)postgresql(dot)org>
Subject: Scanner/Parser question - what does _P imply?
Date: 2007-01-18 10:24:59
Message-ID: 1169115899.2805.66.camel@sakai.localdomain
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I can't find an authoritative answer to this question.

Many of the keywords listed in keywords.c are defined with symbolic
names that end in '_P' (underscore P).

What differentiates those keywords from the other keywords? What does
the 'P' stand for?

Are those PostgreSQL-specific keywords (i.e. keywords not defined by the
SQL standard)?

Thanks.

-- Korry

--
Korry Douglas korryd(at)enterprisedb(dot)com
EnterpriseDB http://www.enterprisedb.com

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