| From: | 曾文旌 <wenjing(dot)zwj(at)alibaba-inc(dot)com> |
|---|---|
| To: | tushar <tushar(dot)ahuja(at)enterprisedb(dot)com> |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Prabhat Sahu <prabhat(dot)sahu(at)enterprisedb(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, "蔡松露(子嘉)" <zijia(at)taobao(dot)com>, "Cai, Le" <le(dot)cai(at)alibaba-inc(dot)com> |
| Subject: | Re: [Proposal] Global temporary tables |
| Date: | 2020-04-27 09:49:10 |
| Message-ID: | 1A904E46-4BFD-49E6-AA92-ED4AF782018A@alibaba-inc.com |
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| Lists: | pgsql-hackers |
> 2020年4月24日 下午9:03，tushar <tushar(dot)ahuja(at)enterprisedb(dot)com> 写道：
>
> On 4/22/20 2:49 PM, 曾文旌 wrote:
>>
>> I provide the TRUNCATE tablename DROP to clear the data in the GTT and delete the storage files.
>> This feature requires the current transaction to commit immediately after it finishes truncate.
>>
> Thanks Wenjing , Please refer this scenario
>
> postgres=# create global temp table testing (a int);
> CREATE TABLE
> postgres=# begin;
> BEGIN
> postgres=*# truncate testing; -- working [1]
> TRUNCATE TABLE
> postgres=*# truncate testing drop;
> ERROR: Truncate global temporary table cannot run inside a transaction block --that is throwing an error claiming something which i did successfully [1]
The truncate GTT drop was removed.
So the problem goes away.
Wenjing
> postgres=!#
>
> --
> regards,tushar
> EnterpriseDB https://www.enterprisedb.com/
> The Enterprise PostgreSQL Company
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