Re: [Proposal] Global temporary tables

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 f_gtt1;
 c1 | c2
----+----
(0 rows)