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(义从) <wenjing.zwj@alibaba-inc.com>
Cc: tushar <tushar.ahuja@enterprisedb.com>, Pavel Stehule <pavel.stehule@gmail.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>, 萧少聪(铁庵) <shaocong.xsc@alibaba-inc.com>
Date: 2020-03-16T06:23:32Z
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, where the Foreign table on GTT not showing
records.

postgres=# create extension postgres_fdw;
CREATE EXTENSION
postgres=# do $d$
    begin
        execute $$create server fdw foreign data wrapper postgres_fdw
options (host 'localhost',dbname 'postgres',port
'$$||current_setting('port')||$$')$$;
    end;
$d$;
DO
postgres=# create user mapping for public server fdw;
CREATE USER MAPPING

postgres=# create table lt1 (c1 integer, c2 varchar(50));
CREATE TABLE
postgres=# insert into lt1 values (1,'c21');
INSERT 0 1
postgres=# create foreign table ft1 (c1 integer, c2 varchar(50)) server fdw
options (table_name 'lt1');
CREATE FOREIGN TABLE
postgres=# select * from ft1;
 c1 | c2
----+-----
  1 | c21
(1 row)

postgres=# create global temporary table gtt1 (c1 integer, c2 varchar(50));
CREATE TABLE
postgres=# insert into gtt1 values (1,'gtt_c21');
INSERT 0 1
postgres=# create foreign table f_gtt1 (c1 integer, c2 varchar(50)) server
fdw options (table_name 'gtt1');
CREATE FOREIGN TABLE

postgres=# select * from gtt1;
 c1 |   c2
----+---------
  1 | gtt_c21
(1 row)

postgres=# select * from f_gtt1;
 c1 | c2
----+----
(0 rows)

-- 

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