Hi ,
pg_upgrade scenario is failing if database is containing global
temporary table
=============================
centos@tushar-ldap-docker bin]$ ./psql postgres
psql (13devel)
Type "help" for help.
postgres=# create global temporary table t(n int);
CREATE TABLE
postgres=# \q
===============================
run pg_upgrade -
[centos@tushar-ldap-docker bin]$ ./pg_upgrade -d /tmp/t1/ -D /tmp/t2 -b
. -B .
Performing Consistency Checks
-----------------------------
Checking cluster versions ok
Checking database user is the install user ok
Checking database connection settings ok
Checking for prepared transactions ok
Checking for reg* data types in user tables ok
--
--
If pg_upgrade fails after this point, you must re-initdb the
new cluster before continuing.
Performing Upgrade
------------------
Analyzing all rows in the new cluster ok
Freezing all rows in the new cluster ok
Deleting files from new pg_xact ok
--
--
Restoring database schemas in the new cluster
ok
Copying user relation files
/tmp/t1/base/13585/16384
error while copying relation "public.t": could not open file
"/tmp/t1/base/13585/16384": No such file or directory
Failure, exiting
regards,
On 2/25/20 7:06 PM, Prabhat Sahu wrote:
Hi All,
Please check the below findings on GTT.
_-- Scenario 1:_
Under "information_schema", We are not allowed to create "temporary
table", whereas we can CREATE/DROP "Global Temporary Table", is it
expected ?
postgres=# create temporary table information_schema.temp1(c1 int);
ERROR: cannot create temporary relation in non-temporary schema
LINE 1: create temporary table information_schema.temp1(c1 int);
^
postgres=# create global temporary table information_schema.temp1(c1 int);
CREATE TABLE
postgres=# drop table information_schema.temp1 ;
DROP TABLE
_-- Scenario 2:_
Here I am getting the same error message in both the below cases.
We may add a "global" keyword with GTT related error message.
postgres=# create global temporary table gtt1 (c1 int unique);
CREATE TABLE
postgres=# create temporary table tmp1 (c1 int unique);
CREATE TABLE
postgres=# create temporary table tmp2 (c1 int references gtt1(c1) );
ERROR: constraints on temporary tables may reference only temporary
tables
postgres=# create global temporary table gtt2 (c1 int references
tmp1(c1) );
ERROR: constraints on temporary tables may reference only temporary
tables
Thanks,
Prabhat Sahu
On Tue, Feb 25, 2020 at 2:25 PM 曾文旌(义从) <wenjing....@alibaba-inc.com
<mailto:wenjing....@alibaba-inc.com>> wrote:
2020年2月24日 下午5:44，Prabhat Sahu <prabhat.s...@enterprisedb.com
<mailto:prabhat.s...@enterprisedb.com>> 写道：
On Fri, Feb 21, 2020 at 9:10 PM 曾文旌(义从)
<wenjing....@alibaba-inc.com
<mailto:wenjing....@alibaba-inc.com>> wrote:
Hi,
I have started testing the "Global temporary table" feature,
That's great, I see hope.
from "gtt_v11-pg13.patch". Below is my findings:
-- session 1:
postgres=# create global temporary table gtt1(a int);
CREATE TABLE
-- seeeion 2:
postgres=# truncate gtt1 ;
ERROR: could not open file "base/13585/t3_16384": No such
file or directory
is it expected?
Oh ,this is a bug, I fixed it.
Thanks for the patch.
I have verified the same, Now the issue is resolved with v12 patch.
Kindly confirm the below scenario:
postgres=# create global temporary table gtt1 (c1 int unique);
CREATE TABLE
postgres=# create global temporary table gtt2 (c1 int references
gtt1(c1) );
ERROR: referenced relation "gtt1" is not a global temp table
postgres=# create table tab2 (c1 int references gtt1(c1) );
ERROR: referenced relation "gtt1" is not a global temp table
Thanks,
Prabhat Sahu
GTT supports foreign key constraints
in global_temporary_table_v13-pg13.patch
Wenjing
--
With Regards,
Prabhat Kumar Sahu
EnterpriseDB: http://www.enterprisedb.com <http://www.enterprisedb.com/>
--
regards,tushar
EnterpriseDB https://www.enterprisedb.com/
The Enterprise PostgreSQL Company
