Re: [Proposal] Global temporary tables

From: tushar <tushar(dot)ahuja(at)enterprisedb(dot)com>
To: 曾文旌 <wenjing(dot)zwj(at)alibaba-inc(dot)com>, Prabhat Sahu <prabhat(dot)sahu(at)enterprisedb(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: 2020-04-20 13:15:42
Message-ID: bbb9f3a0-3584-661c-526a-83b32547c771@enterprisedb.com
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On 4/20/20 2:59 PM, 曾文旌 wrote:
> Please check my new patch.

Thanks Wenjing. Please refer this below scenario , getting error - 
ERROR:  could not read block 0 in file "base/16466/t4_16472": read only
0 of 8192 bytes

Steps to reproduce

Connect to psql terminal,create a table ( create global temp table t2 (n
int primary key ) on commit delete rows;)
exit from psql terminal and execute (./clusterdb -t t2 -d postgres -v)
connect to psql terminal and one by one execute these below sql statements
(
cluster verbose t2 using t2_pkey;
cluster verbose t2 ;
alter table t2 add column i int;
cluster verbose t2 ;
cluster verbose t2 using t2_pkey;
create unique index ind on t2(n);
create unique index concurrently  ind1 on t2(n);
select * from t2;
)
This last SQL - will throw this error -  - ERROR:  could not read block
0 in file "base/16466/t4_16472": read only 0 of 8192 bytes

--
regards,tushar
EnterpriseDB https://www.enterprisedb.com/
The Enterprise PostgreSQL Company

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