Re: patch: function xmltable

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: Craig Ringer <craig(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: patch: function xmltable
Date: 2016-11-21 18:12:21
Message-ID: 20161121181221.d2veeltaaejutzxt@alvherre.pgsql
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Something I just noticed is that transformTableExpr takes a TableExpr
node and returns another TableExpr node. That's unlike what we do in
other places, where the node returned is of a different type than the
input node. I'm not real clear what happens if you try to re-transform
a node that was already transformed, but it seems worth thinking about.

Álvaro Herrera
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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