From: | Dong Wook Lee <sh95119(at)gmail(dot)com> |
---|---|
To: | Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: [PATCH] Improve function toast_delete_external (src/backend/access/table/toast_helper.c) |
Date: | 2022-02-09 23:10:16 |
Message-ID: | CAAcByaJJBJU_y9gGiSTtjeTEshE=Ovv-VuedvFfC4paJSKHkeg@mail.gmail.com |
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Thread: | |
Lists: | pgsql-hackers |
Yes, now I understand it.
Thank you for letting me know about that.
Thanks.
2022년 2월 10일 (목) 00:39, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>님이 작성:
>
> Em qua., 9 de fev. de 2022 às 11:34, Dong Wook Lee <sh95119(at)gmail(dot)com>
> escreveu:
>
>> Hi,
>>
>> I've applied your patch. I think it's reasonable.
>> but IMHO It looks more complicated to read because of many conditions
>> in if statement.
>> so what about just moving up if-statement?
>>
>
> No.
> Your version is worse than HEAD, please don't.
>
> 1. Do not declare variables after statement.
> Although Postgres accepts C99, this is not acceptable, for a number of
> problems, already discussed.
>
> 2. Still slow unnecessarily, because still test TupleDescAttr(tupleDesc,
> i)->attlen,
> which is much more onerous than test isnull.
>
> 3. We don't write Baby C code.
> C has short break expressions, use-it!
>
> My version is the right thing, here.
>
> regards,
> Ranier Vilela
>
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