From: Jim Nasby <Jim.Nasby@BlueTreble.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
To: Anton Melser <melser.anton@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Plan differences
Date: Thu, 31 Dec 2015 10:29:10 -0600
Message-ID: <568557D6.8040905@BlueTreble.com> (raw)
In-Reply-To: <10594.1451574122@sss.pgh.pa.us>
References: <CAKywjPoJS4hQiLTukMDUCvmaA_aJp-W11tvnu-=wnwaL0vuqQA@mail.gmail.com>
<10594.1451574122@sss.pgh.pa.us>
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On 12/31/15 9:02 AM, Tom Lane wrote:
> If you don't want to rebuild the whole database, you can create indexes to
> support this by declaring them with COLLATE "C", or the older way is to
> declare them with text_pattern_ops as the index opclass.
Do you have to do anything special in the query itself for COLLATE "C"
to work?
I didn't realize the two methods were equivalent.
--
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
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To: pgsql-performance@postgresql.org
Cc: Jim.Nasby@BlueTreble.com, tgl@sss.pgh.pa.us, melser.anton@gmail.com
Subject: Re: Plan differences
In-Reply-To: <568557D6.8040905@BlueTreble.com>
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