| From: | Surafel Temesgen <surafel3000(at)gmail(dot)com> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
| Cc: | vik(dot)fearing(at)2ndquadrant(dot)com, Mark Dilger <hornschnorter(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, andrew(at)tao11(dot)riddles(dot)org(dot)uk |
| Subject: | Re: FETCH FIRST clause PERCENT option |
| Date: | 2019-02-01 11:10:38 |
| Message-ID: | CALAY4q_v1p6PimdNUhpqgUY4E1Vv3-81Wm9JPKKZ9DfxCn8h9w@mail.gmail.com |
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| Lists: | pgsql-hackers |
here is a rebased version of previous patch with planner
comment included
regards
Surafel
On Wed, Jan 30, 2019 at 9:07 AM Surafel Temesgen <surafel3000(at)gmail(dot)com>
wrote:
>
>
> On Mon, Jan 28, 2019 at 1:28 AM Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
> wrote:
>
>>
>>
>> OK. Does that mean you agree the incremental approach is reasonable?
>>
>
> there are no noticeable performance difference but i love previous
> approach more regarding cursor operation it fetch tuple forward and
> backward from tuplestore only but in incremental approach we have to
> re execute outer node in every forward and backward fetching operation
>
> regards
> Surafel
>
| Attachment | Content-Type | Size |
|---|---|---|
| fetch-with-percent-v8.patch | text/x-patch | 40.0 KB |
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