Re: [Proposal] Global temporary tables

From: Prabhat Sahu <prabhat(dot)sahu(at)enterprisedb(dot)com>
To: 曾文旌(义从) <wenjing(dot)zwj(at)alibaba-inc(dot)com>
Cc: Pavel Stehule <pavel(dot)stehule(at)gmail(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>, 萧少聪(铁庵) <shaocong(dot)xsc(at)alibaba-inc(dot)com>
Subject: Re: [Proposal] Global temporary tables
Date: 2020-02-24 13:34:43
Message-ID: CANEvxPqjhL9LrRBp2rThD=sbkWx0t1BMVe468YmfSMSa9OC2-w@mail.gmail.com
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Hi All,

I observe a different behavior in "temporary table" and "global temporary
table".
Not sure if it is expected?

postgres=# create global temporary table parent1(a int) on commit delete
rows;
CREATE TABLE
postgres=# create global temporary table child1() inherits (parent1);
CREATE TABLE
postgres=# insert into parent1 values(1);
INSERT 0 1
postgres=# insert into child1 values(2);
INSERT 0 1
postgres=# select * from parent1;
a
---
(0 rows)

postgres=# select * from child1;
a
---
(0 rows)

postgres=# create temporary table parent2(a int) on commit delete rows;
CREATE TABLE
postgres=# create temporary table child2() inherits (parent2);
CREATE TABLE
postgres=# insert into parent2 values(1);
INSERT 0 1
postgres=# insert into child2 values(2);
INSERT 0 1
postgres=# select * from parent2;
a
---
2
(1 row)

postgres=# select * from child2;
a
---
2
(1 row)

Thanks,
Prabhat Sahu

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