setting estate in ExecInitNode() itself

From: Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>
To: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: setting estate in ExecInitNode() itself
Date: 2018-01-05 04:17:58
Message-ID: CAFjFpRccTimPYT7pdw4Naijd-hCVrb9gyBCdfiBDxr3yrtkPXA@mail.gmail.com
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Hi,
Looking at ExecInitXYZ() functions, we can observe that every such
function has a statement like

XYZstate->ps.state = estate;

where it saves estate in the PlanState.

I am wondering why don't we instead save estate in ExecInitNode() itself like

result->estate = estate;

Are there any cases when a node wants to set a different estate there?
--
Best Wishes,
Ashutosh Bapat
EnterpriseDB Corporation
The Postgres Database Company

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