pgsql: Throw error if a <window definition> references a window that

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Throw error if a <window definition> references a window that
Date: 2008-12-31 23:42:56
Message-ID: 20081231234256.8BACF754A03@cvs.postgresql.org
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Log Message:
-----------
Throw error if a <window definition> references a window that already has a
frame clause, as appears to be required by the fine print in the SQL spec.
Per discussion with Pavel, not doing so risks user confusion.

Modified Files:
--------------
pgsql/doc/src/sgml/ref:
select.sgml (r1.115 -> r1.116)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/select.sgml?r1=1.115&r2=1.116)
pgsql/doc/src/sgml:
syntax.sgml (r1.128 -> r1.129)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/syntax.sgml?r1=1.128&r2=1.129)
pgsql/src/backend/parser:
parse_clause.c (r1.183 -> r1.184)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_clause.c?r1=1.183&r2=1.184)

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