Re: [Proposal] Global temporary tables

út 28. 1. 2020 v 17:01 odesílatel 曾文旌(义从) <wenjing(dot)zwj(at)alibaba-inc(dot)com>
napsal:

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> 2020年1月24日 上午4:47，Robert Haas <robertmhaas(at)gmail(dot)com> 写道：
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> On Sat, Jan 11, 2020 at 8:51 PM Tomas Vondra
> <tomas(dot)vondra(at)2ndquadrant(dot)com> wrote:
>
> I proposed just ignoring those new indexes because it seems much simpler
> than alternative solutions that I can think of, and it's not like those
> other solutions don't have other issues.
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> +1.
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> I complete the implementation of this feature.
> When a session x create an index idx_a on GTT A then
> For session x, idx_a is valid when after create index.
> For session y, before session x create index done, GTT A has some data,
> then index_a is invalid.
> For session z, before session x create index done, GTT A has no data,
> then index_a is valid.
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>
> For example, I've looked at the "on demand" building as implemented in
> global_private_temp-8.patch, I kinda doubt adding a bunch of index build
> calls into various places in index code seems somewht suspicious.
>
>
> +1. I can't imagine that's a safe or sane thing to do.
>
> --
> Robert Haas
> EnterpriseDB: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company
>
>
> Opinion by Pavel
> + rel->rd_islocaltemp = true; <<<<<<< if this is valid, then the name of
> field "rd_islocaltemp" is not probably best
> I renamed rd_islocaltemp
>

I don't see any change?

> Opinion by Konstantin Knizhnik
> 1 Fixed comments
> 2 Fixed assertion
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>
> Please help me review.
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>
> Wenjing
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