Horton

Re: [Proposal] Global temporary tables

Prabhat Sahu <prabhat.sahu@enterprisedb.com>

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From: Prabhat Sahu <prabhat.sahu@enterprisedb.com>
To: 曾文旌 <wenjing.zwj@alibaba-inc.com>
Cc: Pavel Stehule <pavel.stehule@gmail.com>, tushar <tushar.ahuja@enterprisedb.com>, Robert Haas <robertmhaas@gmail.com>, 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: 2020-04-27T09:26:42Z
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.

Hi Wenjing,

Please check the below scenario shows different error message with "DROP
TABLE gtt;" for gtt with and without index.

*-- Session1:*postgres=# create global temporary table gtt1 (c1 int);
CREATE TABLE
postgres=# create global temporary table gtt2 (c1 int);
CREATE TABLE
postgres=# create index idx2 on gtt2(c1);
CREATE INDEX


*-- Session2:*postgres=# drop table gtt1;
ERROR:  can not drop relation gtt1 when other backend attached this global
temp table
postgres=# drop table gtt2;
ERROR:  can not drop index gtt2 when other backend attached this global
temp table.

-- 

With Regards,
Prabhat Kumar Sahu
EnterpriseDB: http://www.enterprisedb.com