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From: Vladislav Shpilevoy via Tarantool-patches <tarantool-patches@dev.tarantool.org>
To: imeevma@tarantool.org
Cc: tarantool-patches@dev.tarantool.org
Subject: Re: [Tarantool-patches] [PATCH v2 15/15] sql: remove field argv from struct sql_context
Date: Thu, 23 Sep 2021 00:51:22 +0200
Message-ID: <be1d21b7-caa4-9c58-33c0-a9f9b04e0dc9@tarantool.org> (raw)
In-Reply-To: <17afb79fd990215380cff10d6a515a717a21850b.1632220375.git.imeevma@gmail.com>

Thanks for the patch!

> diff --git a/src/box/sql/func.c b/src/box/sql/func.c
> index cdfb020cb..6cbbbac74 100644
> --- a/src/box/sql/func.c
> +++ b/src/box/sql/func.c
> @@ -55,31 +55,31 @@ static struct func_sql_builtin **functions;
>  
>  /** Implementation of the SUM() function. */
>  static void
> -step_sum(struct sql_context *ctx, int argc, struct Mem **argv)
> +step_sum(struct sql_context *ctx, int argc, struct Mem *argv)

Is it a good idea? This way you force to allocate the Mem array.
But what if I have a function call like func(col1, col10, col20),
where colN are columns of a tuple? They are stored in Mems, so previously
it would be possible to pass &col1, &col10, &col20. Now you have no
choice but to allocate 3 * sizeof(Mem) and ephem-copy the mems.

How does func(col1, col10, col20) behave before this patch? Does it
copy the cols even now?

  reply	other threads:[~2021-09-22 22:51 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1632220375.git.imeevma@gmail.com>
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 01/15] sql: fix possible undefined behavior during cast Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 02/15] sql: use register P1 for number of arguments Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 04/15] sql: move collation to struct sql_context Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 05/15] sql: introduce mem_append() Mergen Imeev via Tarantool-patches
2021-09-25 11:06   ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 06/15] sql: remove sql_vdbemem_finalize() Mergen Imeev via Tarantool-patches
2021-09-22 22:47   ` Vladislav Shpilevoy via Tarantool-patches
2021-09-25 11:13     ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 07/15] sql: rework SUM() Mergen Imeev via Tarantool-patches
2021-09-22 22:48   ` Vladislav Shpilevoy via Tarantool-patches
2021-09-25 11:17     ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 08/15] sql: rework TOTAL() Mergen Imeev via Tarantool-patches
2021-09-25 11:20   ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 09/15] sql: rework AVG() Mergen Imeev via Tarantool-patches
2021-09-22 22:48   ` Vladislav Shpilevoy via Tarantool-patches
2021-09-25 11:32     ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 10/15] sql: rework COUNT() Mergen Imeev via Tarantool-patches
2021-09-25 11:34   ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 11/15] sql: rework MIN() and MAX() Mergen Imeev via Tarantool-patches
2021-09-25 11:36   ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 12/15] sql: rework GROUP_CONCAT() Mergen Imeev via Tarantool-patches
2021-09-22 22:49   ` Vladislav Shpilevoy via Tarantool-patches
2021-09-25 11:42     ` Mergen Imeev via Tarantool-patches
2021-09-29  7:03       ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 13/15] sql: remove copying of result in finalizers Mergen Imeev via Tarantool-patches
2021-09-22 22:50   ` Vladislav Shpilevoy via Tarantool-patches
2021-09-25 11:47     ` Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 14/15] sql: remove MEM_TYPE_AGG Mergen Imeev via Tarantool-patches
2021-09-21 10:59 ` [Tarantool-patches] [PATCH v2 15/15] sql: remove field argv from struct sql_context Mergen Imeev via Tarantool-patches
2021-09-22 22:51   ` Vladislav Shpilevoy via Tarantool-patches [this message]
2021-09-25 12:03     ` Mergen Imeev via Tarantool-patches

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