Re: Access inside pg_node_tree from query?

From: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
To: Ryan Murphy <ryanfmurphy(at)gmail(dot)com>
Cc: PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Access inside pg_node_tree from query?
Date: 2017-02-11 12:40:37
Message-ID: CAB7nPqTOYbfGE1EiJ9ugg4U0545Jf7ULi1f1aMRg2BedtAEKcw@mail.gmail.com
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On Sat, Feb 11, 2017 at 7:19 PM, Ryan Murphy <ryanfmurphy(at)gmail(dot)com> wrote:
> Quick question, just curious - is there a way to access the members of a
> `pg_node_tree` value within a Postgres query? By pg_node_tree I mean for
> example, the `ev_qual` field in the `pg_rewrite` table. By "access the
> members" I mean in the same way that you can access the members of a json or
> jsonp value (using -> or ->>). Is there anything analogous for
> pg_node_tree?

There are no in-core operators or functions to manipulate pg_node_tree.
--
Michael

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