Re: How to inspect tuples during execution of a plan?

From: Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com>
To: Ernst-Georg Schmid <ernst(dot)georg(dot)schmid(at)googlemail(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: How to inspect tuples during execution of a plan?
Date: 2016-10-13 20:36:17
Message-ID: 3c27dc2f-dfe7-4c57-d891-9630b18f1507@BlueTreble.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On 10/12/16 2:58 AM, Ernst-Georg Schmid wrote:
>> Either of those would do, if you want to write change the executor.
>> >
> I used the ExeceutorRun_hook and it seems to work. The drawback is,
> that I have to provide my own implementation of ExecutePlan() which
> could make it incompatible over versions of PostgreSQL. I don't know
> how stable that function is over time.

There might be another possibility, which would be to use one of the
earlier hooks to change the query destination, and to implement a custom
receiver.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
855-TREBLE2 (855-873-2532) mobile: 512-569-9461

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Merlin Moncure 2016-10-13 21:07:46 emergency outage requiring database restart
Previous Message Tom Lane 2016-10-13 20:35:09 Re: Conflicting constraint being merged