pg_sequences bug ?
Hi hackers,
I tried a committed pg_sequences for PostgreSQL 10dev (https://commitfest.postgresql.org/12/771/).
I found that when multiple users create SEQUENCE, I cannot see the pg_sequences catalog. I think that should work just like pg_tables.
$ psql -U user1
postgres=> CREATE SEQUENCE seq1 ;
CREATE SEQUENCE
$ psql -U user2
postgres=> CREATE SEQUENCE seq2 ;
CREATE SEQUENCE
postgres=> SELECT * FROM pg_sequences ;
ERROR: permission denied for sequence seq1
Apparently it seems that the pg_sequence_last_value function included in the pg_sequences view definition cannot be executed.
Is this behavior supposed?
Snapshot:
https://ftp.postgresql.org/pub/snapshot/dev/postgresql-snapshot.tar.gz 2017-02-04 00:29:04
Operating System:
Red Hat Enterprise Linux 7 Update 2 (x86-64)
Regards.
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On Sat, Feb 4, 2017 at 2:50 PM, Shinoda, Noriyoshi
<noriyoshi.shinoda@hpe.com> wrote:
I tried a committed pg_sequences for PostgreSQL 10dev (https://commitfest.postgresql.org/12/771/).
I found that when multiple users create SEQUENCE, I cannot see the pg_sequences catalog. I think that should work just like pg_tables.$ psql -U user1
postgres=> CREATE SEQUENCE seq1 ;
CREATE SEQUENCE$ psql -U user2
postgres=> CREATE SEQUENCE seq2 ;
CREATE SEQUENCE
postgres=> SELECT * FROM pg_sequences ;
ERROR: permission denied for sequence seq1Apparently it seems that the pg_sequence_last_value function included in the pg_sequences view definition cannot be executed.
Is this behavior supposed?
That seems user-unfriendly to me.
We could perhaps just use has_sequence_privilege() and return NULL if
the caller of pg_sequences does not have select and usage access to a
given sequence? Please see the patch attached.
--
Michael
Attachments:
pgsequences-read.patchtext/x-patch; charset=US-ASCII; name=pgsequences-read.patchDownload+9-2
On 2/4/17 7:30 AM, Michael Paquier wrote:
We could perhaps just use has_sequence_privilege() and return NULL if
the caller of pg_sequences does not have select and usage access to a
given sequence? Please see the patch attached.
Committed with documentation updates. Thanks.
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Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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