Skip site navigation (1) Skip section navigation (2)

Re: texteq/byteaeq: avoid detoast [REVIEW]

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: Magnus Hagander <magnus(at)hagander(dot)net>, Itagaki Takahiro <itagaki(dot)takahiro(at)gmail(dot)com>, Andy Colson <andy(at)squeakycode(dot)net>, Noah Misch <noah(at)leadboat(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: texteq/byteaeq: avoid detoast [REVIEW]
Date: 2011-01-17 20:33:57
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> On mn, 2011-01-17 at 07:35 +0100, Magnus Hagander wrote:
>> In fact, aren't there cases where the *length test* also fails?

> Currently, two text values are only equal of strcoll() considers them
> equal and the bits are the same.  So this patch is safe in that regard.

> There is, however, some desire to loosen this.

That isn't ever going to happen, unless you'd like to give up hash joins
and hash aggregation on text values.

			regards, tom lane

In response to


pgsql-hackers by date

Next:From: Jim NasbyDate: 2011-01-17 20:36:56
Subject: Re: texteq/byteaeq: avoid detoast [REVIEW]
Previous:From: Simon RiggsDate: 2011-01-17 20:24:30
Subject: Re: We need to log aborted autovacuums

Privacy Policy | About PostgreSQL
Copyright © 1996-2017 The PostgreSQL Global Development Group