Fix ALTER DEFAULT PRIVILEGES with duplicated objects
Specifying duplicated objects in this command would lead to unique
constraint violations in pg_default_acl or "tuple already updated by
self" errors. Similarly to GRANT/REVOKE, increment the command ID after
each subcommand processing to allow this case to work transparently.
A regression test is added by tweaking one of the existing queries of
privileges.sql to stress this case.
Reported-by: Andrus
Author: Michael Paquier
Reviewed-by: Álvaro Herrera
Discussion: https://postgr.es/m/ae2a7dc1-9d71-8cba-3bb9-e4cb7eb1f44e@hot.ee
Backpatch-through: 9.5
Branch
------
REL9_6_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/7dc3be9df86cfd2515e76c078347dccc9a929d0b
Modified Files
--------------
src/backend/catalog/aclchk.c | 3 +++
src/test/regress/expected/privileges.out | 3 ++-
src/test/regress/sql/privileges.sql | 3 ++-
3 files changed, 7 insertions(+), 2 deletions(-)