From: PG Doc comments form <noreply@postgresql.org>
To: pgsql-docs@lists.postgresql.org
Cc: splarv@ya.ru
Subject: ^@ operator for text
Date: Thu, 23 Dec 2021 11:34:56 +0000
Message-ID: <164025929698.19324.7276266494030468977@wrigleys.postgresql.org> (raw)
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/14/functions-string.html
Description:
In the new documentation
https://www.postgresql.org/docs/14/functions-string.html
you again lost information about ^@ operator for text and keep information
about only function starts_with on which this operator is based. But ^@ is
very important, because it can be accelerated by special index SP-GIST
index.
https://www.postgresql.org/docs/14/spgist-builtin-opclasses.html
The task to filter text strings by prefix is rather common and using ^@ and
SP-GIST is the best solution for this (rather options is to use starts_with
without index acceleration or use LIKE construction with SP-GIST, which more
complex (need to mention C locales), overengeniered and may be more slow).
As I say the filtering text by prefix is very common task, but information
about the best method is absent now.
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To: pgsql-docs@postgresql.org
Cc: noreply@postgresql.org, pgsql-docs@lists.postgresql.org, splarv@ya.ru
Subject: Re: ^@ operator for text
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