Horton

Re: [Proposal] Global temporary tables

tushar <tushar.ahuja@enterprisedb.com>

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From: tushar <tushar.ahuja@enterprisedb.com>
To: 曾文旌 <wenjing.zwj@alibaba-inc.com>, Pavel Stehule <pavel.stehule@gmail.com>, Prabhat Sahu <prabhat.sahu@enterprisedb.com>, Robert Haas <robertmhaas@gmail.com>
Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>, Konstantin Knizhnik <k.knizhnik@postgrespro.ru>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>, 蔡松露(子嘉) <zijia@taobao.com>, "Cai, Le" <le.cai@alibaba-inc.com>
Date: 2020-04-24T13:03:03Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. PageAddItemExtended(): Add LP_UNUSED assertion.

  2. Remove temporary files after backend crash

  3. Fix comment in indexing.c

  4. Fix failure to ignore leftover temp tables after a server crash.

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]
postgres=!#

-- 
regards,tushar
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