Re: [HACKERS] Surjective functional indexes - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: [HACKERS] Surjective functional indexes
Date
Msg-id CANP8+jJTADnufZjZ9gMqkaV1mgn_6VHmLJj7Gg3YepOvujmKWg@mail.gmail.com
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In response to Re: [HACKERS] Surjective functional indexes  (Konstantin Knizhnik <k.knizhnik@postgrespro.ru>)
Responses Re: [HACKERS] Surjective functional indexes
Re: [HACKERS] Surjective functional indexes
Re: [HACKERS] Surjective functional indexes
List pgsql-hackers
On 13 September 2017 at 11:30, Konstantin Knizhnik
<k.knizhnik@postgrespro.ru> wrote:

> The only reason of all this discussion about terms is that I need to choose
> name for correspondent index option.
> Simon think that we do not need this option at all. In this case we should
> not worry about right term.
> From my point of view, "projection" is quite clear notion and not only for
> mathematics. It is also widely used in IT and especially in DBMSes.

If we do have an option it won't be using fancy mathematical
terminology at all, it would be described in terms of its function,
e.g. recheck_on_update

Yes, I'd rather not have an option at all, just some simple code with
useful effect, like we have in many other places.

-- 
Simon Riggs                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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