Re: How to determine what is preventing deleting a rule - Mailing list pgsql-general

From Melvin Davidson
Subject Re: How to determine what is preventing deleting a rule
Date
Msg-id CANu8Fiz8VBYFnVUXCF7rZCypunyQCEaNd=hO8W7ZDKBtat48fA@mail.gmail.com
Whole thread Raw
In response to Re: How to determine what is preventing deleting a rule  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
> How can I find out what this object is?
This query might help if the object is a table:

SELECT c.relname as table,
       a.rolname as owner,
       c.relacl as permits
  FROM pg_class c
  JOIN pg_authid a ON ( a.OID = c.relowner )
WHERE relname NOT LIKE 'pg_%'
  AND relname NOT LIKE 'information%'
  AND relname NOT LIKE 'sql_%'
  AND relkind = 'r'
  AND a.rolname = '<the_owner_with_problem>'
ORDER BY relname;

Since you have not stated the PostgreSQL version, I can only
assure you this will work for 9.6 and below.

On Sat, Aug 17, 2019 at 7:49 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
stan <stanb@panix.com> writes:
> I have deleted,  what i thought were all the objects referenced by these roles,
> but I still get an error saying there is one object they reference.
> How can I find out what this object is?

The error should tell you, if you're connected to the database where
that object is.

regression=# create database d1;
CREATE DATABASE
regression=# create database d2;
CREATE DATABASE
regression=# create user joe;
CREATE ROLE
regression=# \c d2 joe
You are now connected to database "d2" as user "joe".
d2=> create table tt(d1 int);
CREATE TABLE
d2=> \c d1 postgres
You are now connected to database "d1" as user "postgres".
d1=# drop user joe;
ERROR:  role "joe" cannot be dropped because some objects depend on it
DETAIL:  1 object in database d2
d1=# \c d2
You are now connected to database "d2" as user "postgres".
d2=# drop user joe;
ERROR:  role "joe" cannot be dropped because some objects depend on it
DETAIL:  owner of table tt

Unfortunately, we can't see into the catalogs of a different database
to explain about dependencies there ...

                        regards, tom lane




--
Melvin Davidson
Maj. Database & Exploration Specialist

Universe Exploration Command – UXC

Employment by invitation only!

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