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| author | Michael Paquier <michael@paquier.xyz> | 2021-01-20 11:39:17 +0900 |
|---|---|---|
| committer | Michael Paquier <michael@paquier.xyz> | 2021-01-20 11:39:17 +0900 |
| commit | 5ad672fc2f6541ec5a0c533fd44d3819bff1447a (patch) | |
| tree | 3248916778e928a51b3aa83c67d9924a6b57d3f5 /src/backend | |
| parent | 6253159965d563dd0e416e064b760e381a60b8e8 (diff) | |
| download | postgresql-5ad672fc2f6541ec5a0c533fd44d3819bff1447a.tar.gz postgresql-5ad672fc2f6541ec5a0c533fd44d3819bff1447a.zip | |
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
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/catalog/aclchk.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/catalog/aclchk.c b/src/backend/catalog/aclchk.c index 2797af35c3d..e2970bfb005 100644 --- a/src/backend/catalog/aclchk.c +++ b/src/backend/catalog/aclchk.c @@ -1391,6 +1391,9 @@ SetDefaultACL(InternalDefaultACL *iacls) ReleaseSysCache(tuple); table_close(rel, RowExclusiveLock); + + /* prevent error when processing duplicate objects */ + CommandCounterIncrement(); } |