From: Kirill Shcherbatov <kshcherbatov@tarantool.org>
To: "n.pettik" <korablev@tarantool.org>,
Tarantool MailList <tarantool-patches@freelists.org>
Subject: [tarantool-patches] Re: [PATCH v2 4/8] sql: get rid of SQL_FUNC_COUNT flag
Date: Wed, 14 Aug 2019 10:25:41 +0300 [thread overview]
Message-ID: <cb8ebc57-2099-0ff2-3b05-0ab860a81bf9@tarantool.org> (raw)
In-Reply-To: <EAD66280-1CF2-4AE4-87BA-E81B3A067D6E@tarantool.org>
>> A helper routine is_simple_count decides whether such
>> optimisation is correct. Using SQL_FUNC_COUNT flag to mark a
>> dummy (non-functional)
>
> Why do you consider it to be non-functional?
>
>> function entry with 0 arguments is a bad practice
>
> Why? Please, support this with arguments.
Because the hastable entry define a function that **NEVER** called.
It relies on arguments overloading and it is strange.
> Hm, this code works just by accident :) There’s no check
> that function is really COUNT, but we are lucky enough
> and there’s no other aggregate function which can take
> empty list of arguments...
Maybe because the helper function's name is "is_simple_count"? =)
next prev parent reply other threads:[~2019-08-14 7:25 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 14:50 [tarantool-patches] [PATCH v2 0/8] sql: uniform SQL and Lua functions subsystem Kirill Shcherbatov
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 1/8] sql: remove SQL_PreferBuiltin flag Kirill Shcherbatov
2019-08-09 16:07 ` [tarantool-patches] " n.pettik
2019-08-12 21:58 ` Konstantin Osipov
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 2/8] sql: GREATEST, LEAST instead of MIN/MAX overload Kirill Shcherbatov
2019-08-09 17:37 ` [tarantool-patches] " n.pettik
2019-08-13 8:26 ` Kirill Shcherbatov
2019-08-12 21:59 ` Konstantin Osipov
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 3/8] sql: wrap all trim functions in dispatcher Kirill Shcherbatov
2019-08-09 18:05 ` [tarantool-patches] " n.pettik
2019-08-13 8:28 ` Kirill Shcherbatov
2019-08-13 22:19 ` n.pettik
2019-08-12 22:00 ` Konstantin Osipov
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 4/8] sql: get rid of SQL_FUNC_COUNT flag Kirill Shcherbatov
2019-08-12 22:01 ` [tarantool-patches] " Konstantin Osipov
2019-08-13 20:35 ` n.pettik
2019-08-14 7:25 ` Kirill Shcherbatov [this message]
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 5/8] sql: introduce a signature_mask for functions Kirill Shcherbatov
2019-08-12 22:04 ` [tarantool-patches] " Konstantin Osipov
2019-08-13 8:32 ` Kirill Shcherbatov
2019-08-13 8:44 ` Konstantin Osipov
2019-08-13 20:38 ` n.pettik
2019-08-14 7:21 ` Kirill Shcherbatov
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 6/8] sql: rename OP_Function to OP_BuiltinFunction Kirill Shcherbatov
2019-08-12 22:04 ` [tarantool-patches] " Konstantin Osipov
2019-08-13 20:36 ` n.pettik
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 7/8] sql: get rid of FuncDef function hash Kirill Shcherbatov
2019-08-12 22:11 ` [tarantool-patches] " Konstantin Osipov
2019-08-13 7:29 ` Kirill Shcherbatov
2019-08-13 8:42 ` Konstantin Osipov
2019-08-13 9:45 ` Kirill Shcherbatov
2019-08-13 20:40 ` n.pettik
2019-08-16 12:57 ` Kirill Shcherbatov
2019-08-20 16:06 ` n.pettik
2019-08-08 14:50 ` [tarantool-patches] [PATCH v2 8/8] box: get rid of box.internal.sql_function_create Kirill Shcherbatov
2019-08-13 20:43 ` [tarantool-patches] " n.pettik
2019-08-16 12:57 ` Kirill Shcherbatov
2019-08-20 19:36 ` n.pettik
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cb8ebc57-2099-0ff2-3b05-0ab860a81bf9@tarantool.org \
--to=kshcherbatov@tarantool.org \
--cc=korablev@tarantool.org \
--cc=tarantool-patches@freelists.org \
--subject='[tarantool-patches] Re: [PATCH v2 4/8] sql: get rid of SQL_FUNC_COUNT flag' \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox