Re: Better management of mergejoinable operators

Поиск
Список
Период
Сортировка
От Michael Glaesemann
Тема Re: Better management of mergejoinable operators
Дата
Msg-id 9AC566F7-FF38-4987-B252-A4D5B730F318@seespotcode.net
обсуждение исходный текст
Ответ на Better management of mergejoinable operators  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Better management of mergejoinable operators  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
On Dec 13, 2006, at 7:56 , Tom Lane wrote:

> Right offhand I cannot see a reason why there should be different
> equality operators with the same sortops.  (If anyone can come up with
> a plausible scenario for that, stop me here...)  So what I'm thinking
> about is a unique index on oprlsortop/oprrsortop; that would both  
> allow
> efficient search, and prevent multiple answers.

I think this makes sense. Would this be affected at all by equality  
of text strings, taking into account locale? Or would there be  
equality for text in each locale (so oprlsortop and oprrsortop would  
always be not only the same type (text) but also of the same locale)?  
I'd think this is would be the case so it wouldn't end up being a  
problem.

Michael Glaesemann
grzm seespotcode net




В списке pgsql-hackers по дате отправления:

Предыдущее
От: Tom Lane
Дата:
Сообщение: Re: psql commandline conninfo
Следующее
От: Tom Lane
Дата:
Сообщение: Re: Better management of mergejoinable operators