diff options
| author | Peter Eisentraut <peter_e@gmx.net> | 2017-02-06 15:17:27 -0500 |
|---|---|---|
| committer | Peter Eisentraut <peter_e@gmx.net> | 2017-02-06 15:27:01 -0500 |
| commit | ab82340a43bebe57a3db0e52bb74120b3bb53ae5 (patch) | |
| tree | 66a8ace42acbc116e9d9e6fbe27f03cf31dc3b78 /src/backend | |
| parent | ad6af3fc4256c0e1eecf5d93d510da4b44e0d480 (diff) | |
Avoid permission failure in pg_sequences.last_value
Before, reading pg_sequences.last_value would fail unless the user had
appropriate sequence permissions, which would make the pg_sequences view
cumbersome to use. Instead, return null instead of the real value when
there are no permissions.
From: Michael Paquier <michael.paquier@gmail.com>
Reported-by: Shinoda, Noriyoshi <noriyoshi.shinoda@hpe.com>
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/catalog/system_views.sql | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql index 28be27a07ec..907e0fb6301 100644 --- a/src/backend/catalog/system_views.sql +++ b/src/backend/catalog/system_views.sql @@ -175,7 +175,11 @@ CREATE OR REPLACE VIEW pg_sequences AS S.seqincrement AS increment_by, S.seqcycle AS cycle, S.seqcache AS cache_size, - pg_sequence_last_value(C.oid) AS last_value + CASE + WHEN has_sequence_privilege(C.oid, 'SELECT,USAGE'::text) + THEN pg_sequence_last_value(C.oid) + ELSE NULL + END AS last_value FROM pg_sequence S JOIN pg_class C ON (C.oid = S.seqrelid) LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) WHERE NOT pg_is_other_temp_schema(N.oid) |