Home > mailing lists

Union All View execution - Mailing list pgsql-hackers

From	Ivan Novick
Subject	Union All View execution
Date	October 15, 2015 09:03:54
Msg-id	CAPJXddawxpNfp_hx=ONzYMrSKJEJsiATbNsYbPcLNyucXWLO1w@mail.gmail.com Whole thread Raw
Responses	Re: Union All View execution (Amit Kapila <amit.kapila16@gmail.com>)
List	pgsql-hackers

Hi,

If we have two queries, Query A and Query B that both return same columns.

If we do Union All View will postgresql execute Query A and then Query B sequentially?

Does the work being discussed around parallel query have the potential to parallely execute both parts of a Union All View?

Also is there a pointer to the latest summary of goals and design for parallel query work?

Thanks!

Cheers,

Ivan

From: Noah Misch
Date: 15 October 2015, 08:51:12
Subject: Re: Parallel Seq Scan

From: Craig Ringer
Date: 15 October 2015, 09:19:49
Subject: Re: Typo in replorigin_sesssion_origin (9.5+)