From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Debraj Manna <subharaj.manna@gmail.com>
To: pgsql-admin <pgsql-admin@postgresql.org>
Subject: Re: Difference between C and en_US.UTF-8 Collate & CType in Postgres 10.x
Date: Fri, 14 Sep 2018 13:57:38 +0200
Message-ID: <0f5ad1359ca05bb3e77c346aa012b1df1d8f5429.camel@cybertec.at> (raw)
In-Reply-To: <CAF6DVKNU0vb4ZeQQ-=agg69QJU3wdjPnMYYrPYY7CKc6iOU7eQ@mail.gmail.com>
References: <CAF6DVKNU0vb4ZeQQ-=agg69QJU3wdjPnMYYrPYY7CKc6iOU7eQ@mail.gmail.com>
Debraj Manna wrote:
> Can someone let me know what is the difference we are expected to observe if we set
> Collate & Ctype to C as against en_US.UTF-8 with encoding set to UTF8 in both the cases ?
For one, the ordering will be substantially different.
Compare the result of these two queries:
SELECT chr(i) FROM generate_series(1, 50000) i ORDER BY chr(i) COLLATE "C";
SELECT chr(i) FROM generate_series(1, 50000) i ORDER BY chr(i) COLLATE "en_US.utf8";
Yours,
Laurenz Albe
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To: pgsql-admin@postgresql.org
Cc: laurenz.albe@cybertec.at, subharaj.manna@gmail.com
Subject: Re: Difference between C and en_US.UTF-8 Collate & CType in Postgres 10.x
In-Reply-To: <0f5ad1359ca05bb3e77c346aa012b1df1d8f5429.camel@cybertec.at>
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