182

I'm in the middle of a database server migration and I can't figure (after googling and searching here) how can I list the database privileges (or all the privileges across the server) on PostgreSQL using the psql command line tool?

I'm on Ubuntu 11.04 and my PostgreSQL version is 8.2.x.

145
postgres=> \l
                                  List of databases
   Name    |  Owner   | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+----------+----------+-------------+-------------+-----------------------
 postgres  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | 
 template0 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
 template1 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres

The docs on Privileges give an explanation of how to interpret the output. For specific privileges on a table of the current database, use \z myTable.

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  • 10
    \z myTable is perfect for ensuring that you've successfully granted access to someone and avoiding looking like an idiot when you say "okay does it work now? it doesn't???" – ijoseph Jul 17 '18 at 17:50
137

perhaps you mean listing users and their privileges for a database - I can't quite tell from the question:

postgres=> \du
                             List of roles
    Role name    |  Attributes  |                    Member of
-----------------+--------------+------------------------------------------------
 dba             | Create role  | {util_user,helpdesk_user,helpdesk_admin}
 helpdesk_admin  | Cannot login | {helpdesk_user}
 helpdesk_user   | Cannot login | {helpdesk_reader}
 jack            |              | {helpdesk_admin}
 postgres        | Superuser    | {}
                 : Create role
                 : Create DB
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  • Nope I wanted a way to list the privileges of a specific database, but I already figured it out. Owner of the database always has all privileges, right? And afterwards we can add more privileges on the database to other users/groups. Those are listed with the \l command. But very thanks anyway. – pedrosanta Aug 18 '11 at 16:20
107

You can do that by following:

SELECT grantee, privilege_type 
FROM information_schema.role_table_grants 
WHERE table_name='mytable'

This gives you this kind of output:

mail=# select grantee, privilege_type from information_schema.role_table_grants where table_name='aliases';
   grantee    |  privilege_type
--------------+-----------------
 mailreader   |  INSERT
 mailreader   |  SELECT
 mailreader   |  UPDATE
 mailreader   |  DELETE
 mailreader   |  TRUNCATE
 mailreader   |  REFERENCES
 mailreader   |  TRIGGER
(7 rows)

mail=#
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  • 10
    Welcome to the site! One small question: why did you insert the output as a screenshot? Please use normal text as often as possible. – dezso Oct 18 '16 at 7:20
  • 1
  • 1
    Is there a way I can see permission for sequences? This only gives table information – inquisitive Dec 1 '16 at 12:50
  • Note that (as least under Postgres 9.4) the above will not work for materialized views. – SeldomNeedy Apr 14 '17 at 23:24
  • @HimanshuChauhan if I add a new role 'new_role' using role 'mailreader', will the information_schema.role_table_grants list new_role too? – Anand Jun 8 '17 at 20:57
24

Using psql meta-commands:

https://www.postgresql.org/docs/current/static/app-psql.html

Going over the page with Ctrl+F gives:

\ddp [ pattern ] Lists default access privilege settings.

\dp [ pattern ] Lists tables, views and sequences with their associated access privileges.

\l[+] [ pattern ] List the databases in the server and show .... access privileges.

Also mentioned above, but not found with word "privileges" on the manual page:

\du+ for roles with login and \dg+ for roles without - will have a filed "Member of" where you find roles granted to roles.

I deliberately skip function and language privileges here, found in psql manual as barely manipulated (and if you do use those privileges you wont come here for an advise). same for user defined types, domains and so on - using "+" after the meta-command will show you privileges if applicable.


A little extreme way to check the privileges is dropping the user in transaction, e.g.:

s=# begin; drop user x;
BEGIN
Time: 0.124 ms
ERROR:  role "x" cannot be dropped because some objects depend on it
DETAIL:  privileges for type "SO dT"
privileges for sequence so
privileges for schema bin
privileges for table xx
privileges for table "csTest"
privileges for table tmp_x
privileges for table s1
privileges for table test
Time: 0.211 ms
s=# rollback;
ROLLBACK
Time: 0.150 ms

When the list is longer than N, (at least in 9.3), warning with list of privileges is collapsed, but you still can find it full in logs...

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14

Undercovers psql uses the bellow query when you issue \du command.

SELECT r.rolname, r.rolsuper, r.rolinherit,
  r.rolcreaterole, r.rolcreatedb, r.rolcanlogin,
  r.rolconnlimit, r.rolvaliduntil,
  ARRAY(SELECT b.rolname
        FROM pg_catalog.pg_auth_members m
        JOIN pg_catalog.pg_roles b ON (m.roleid = b.oid)
        WHERE m.member = r.oid) as memberof
, r.rolreplication
, r.rolbypassrls
FROM pg_catalog.pg_roles r
WHERE r.rolname !~ '^pg_'
ORDER BY 1;
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  • is this sql standard? – ribamar Dec 31 '18 at 15:08
  • ` "ERROR: column r.rolbypassrls does not exist\n\nLINE 9: , r.rolbypassrls\n\n ^\n",` unfortunately does not work – ribamar Dec 31 '18 at 15:16
11

A (possibly obvious) additional step is become the postgres user, otherwise you may get errors about roles not existing.

sudo su - postgres
psql -l

or

psql
postgres=> \l
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  • 3
    Meta: I'm adding this because this question is highly rated on the google query "postgres list roles" and I spent a bit of time in much lower ranked results before I found what I wanted, so I'm memorializing the extra info. – Adam Shostack Dec 18 '15 at 19:04
2

You can input by following:

SELECT * FROM pg_roles;

and you will get

rolname | rolsuper | rolinherit | rolcreaterole | rolcreatedb | rolcanlogin | rolreplication | rolconnlimit | rolpassword | rolvaliduntil | rolbypassrls | rolconfig | oid

maybe here you will think that there are too many roles, and this time, you can use WHERE to select what role you want to see

SELECT * FROM pg_roles WHERE rolname='your role name';

In fact, you can also just input

\du

and you will see all roles you created instead of default

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  • 1
    How is this different from existing answers posted earlier? – mustaccio Jun 21 at 14:56
  • Here as a supplement to the previous, I think, the previous answers were missing this part or not concise enough. – Ricky Xu Jun 21 at 15:09
1

This is my query composed of multiple answers on this question:

SELECT grantee AS user, CONCAT(table_schema, '.', table_name) AS table, 
    CASE 
        WHEN COUNT(privilege_type) = 7 THEN 'ALL'
        ELSE ARRAY_TO_STRING(ARRAY_AGG(privilege_type), ', ')
    END AS grants
FROM information_schema.role_table_grants
GROUP BY table_name, table_schema, grantee;

This results in something like this:

+------+--------------+----------------+
| user |    table     |     grants     |
+------+--------------+----------------+
| foo  | schema.table | ALL            |
| bar  | schema.table | SELECT, INSERT |
+------+--------------+----------------+
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