Re: WIP patch for multiple column assignment in UPDATE

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: WIP patch for multiple column assignment in UPDATE
Date: 2014-06-19 13:37:21
Message-ID: 28860.1403185041@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> I did some tests and It looks so it allows only some form of nested loop.

[ shrug... ] It's a subplan. One evaluation per outer row is what
people are expecting.

regards, tom lane

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Tom Lane 2014-06-19 13:43:06 Re: Minmax indexes
Previous Message Kevin Grittner 2014-06-19 13:30:48 Re: calculation for NUM_FIXED_LWLOCKS