From: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
To: Konstantin Osipov <kostja@tarantool.org>,
tarantool-patches@freelists.org
Subject: [tarantool-patches] Re: [PATCH 2/3] Add surrogate ID for BINARY collation
Date: Thu, 1 Nov 2018 15:22:27 +0300 [thread overview]
Message-ID: <84dc3919-fd62-143d-327b-6f7ae184be5e@tarantool.org> (raw)
In-Reply-To: <20181101113717.GB2340@chai>
On 01/11/2018 14:37, Konstantin Osipov wrote:
> * n.pettik <korablev@tarantool.org> [18/10/31 18:52]:
>
> Sorry for a last-minute comment, but is there any reason why id
> has to be 4294967294? Why not use the next spare id, it's 3
> AFAIR?
I guess, because
1) It is not real collation and is not presented in
_collation. So for a user it would be strange to see
a gap between 2 and 4 in _collation, which can not be
set.
2) Some advanced users could already create their own
collations, so 3 may be occupied.
3) Actually binary collation == no collation and it
is consistent to has its ID near COLL_NONE, in a "special
range" of collation identifiers.
next prev parent reply other threads:[~2018-11-01 12:22 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-25 11:00 [tarantool-patches] [PATCH 0/3] Change collation compatibility rules according to ANSI SQL Nikita Pettik
2018-10-25 11:00 ` [tarantool-patches] [PATCH 1/3] sql: do not add explicit <COLLATE "BINARY"> clause Nikita Pettik
2018-10-25 11:00 ` [tarantool-patches] [PATCH 2/3] Add surrogate ID for BINARY collation Nikita Pettik
2018-10-31 12:34 ` [tarantool-patches] " Vladislav Shpilevoy
2018-10-31 15:47 ` n.pettik
2018-11-01 11:37 ` Konstantin Osipov
2018-11-01 12:22 ` Vladislav Shpilevoy [this message]
2018-11-01 12:58 ` Konstantin Osipov
2018-11-01 13:08 ` n.pettik
2018-11-01 15:39 ` Konstantin Osipov
[not found] ` <95CB17D5-E3ED-4B05-A289-983E2FD0DE37@gmail.com>
2018-11-01 17:45 ` n.pettik
2018-11-01 20:00 ` Konstantin Osipov
2018-11-01 20:06 ` Konstantin Osipov
2018-11-01 20:20 ` n.pettik
2018-10-25 11:00 ` [tarantool-patches] [PATCH 3/3] sql: change collation compatibility rules Nikita Pettik
2018-10-31 12:34 ` [tarantool-patches] " Vladislav Shpilevoy
2018-11-12 23:46 ` n.pettik
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