pgsql: Fix psql's ON_ERROR_ROLLBACK so that it handles COMMIT AND CHAIN - Mailing list pgsql-committers

From Fujii Masao
Subject pgsql: Fix psql's ON_ERROR_ROLLBACK so that it handles COMMIT AND CHAIN
Date
Msg-id E1lD5Rz-0008TW-GE@gemulon.postgresql.org
Whole thread Raw
List pgsql-committers
Fix psql's ON_ERROR_ROLLBACK so that it handles COMMIT AND CHAIN.

When ON_ERROR_ROLLBACK is enabled, psql releases a temporary savepoint
if it's idle in a valid transaction block after executing a query. But psql
doesn't do that after RELEASE or ROLLBACK is executed because a temporary
savepoint has already been destroyed in that case.

This commit changes psql's ON_ERROR_ROLLBACK so that it doesn't release
a temporary savepoint also when COMMIT AND CHAIN is executed. A temporary
savepoint doesn't need to be released in that case because
COMMIT AND CHAIN also destroys any savepoints defined within the transaction
to commit. Otherwise psql tries to release the savepoint that
COMMIT AND CHAIN has already destroyed and cause an error
"ERROR:  savepoint "pg_psql_temporary_savepoint" does not exist".

Back-patch to v12 where transaction chaining was added.

Reported-by: Arthur Nascimento
Author: Arthur Nascimento
Reviewed-by: Fujii Masao, Vik Fearing
Discussion: https://postgr.es/m/16867-3475744069228158@postgresql.org

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/fe06819f105ccea52c12d418c8dbaaaa54377e96

Modified Files
--------------
src/bin/psql/common.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)


pgsql-committers by date:

Previous
From: Fujii Masao
Date:
Subject: pgsql: Fix psql's ON_ERROR_ROLLBACK so that it handles COMMIT AND CHAIN
Next
From: Alvaro Herrera
Date:
Subject: pgsql: Implement pipeline mode in libpq