直接切换到对应的库下执行

 
 select 
    nsp.nspname as SchemaName
    ,cls.relname as ObjectName 
    ,rol.rolname as ObjectOwner
    ,case cls.relkind
        when 'r' then 'TABLE'
        when 'm' then 'MATERIALIZED_VIEW'
        when 'i' then 'INDEX'
        when 'S' then 'SEQUENCE'
        when 'v' then 'VIEW'
        when 'c' then 'TYPE'
        else cls.relkind::text
    end as ObjectType
from pg_class cls
join pg_roles rol 
    on rol.oid = cls.relowner
join pg_namespace nsp 
    on nsp.oid = cls.relnamespace
where nsp.nspname not in ('information_schema', 'pg_catalog')
    and nsp.nspname not like 'pg_toast%'
    and rol.rolname = 'rw'  
order by nsp.nspname, cls.relname;

上面的这个sql，能查出下面的这种rolname=objectowner归属的
schemaname | objectname | objectowner | objecttype 
------------+------------+-------------+------------
 public     | sq1l       | rw          | SEQUENCE
 public     | t1         | rw          | TABLE
 
 
 对于下面的这2种情况，都查不出来的。
 1、表的owner是一个role，表里面access privilege又有其它的授权
 2、非public的schema下
 
db2=# create schema myschema;
db1=# alter schema myschema owner to rw;
db1=# \dn
   List of schemas
   Name   |  Owner   
----------+----------
 myschema | rw
 public   | postgres
(2 rows)

db2=# \d
        List of relations
 Schema | Name | Type  |  Owner   
--------+------+-------+----------
 public | tt   | table | postgres
(1 row)

db2=# \z tt
                                Access privileges
 Schema | Name | Type  |     Access privileges     | Column privileges | Policies 
--------+------+-------+---------------------------+-------------------+----------
 public | tt   | table | postgres=arwdDxt/postgres+|                   | 
        |      |       | dts=arwdDxt/postgres      |                   | 
(1 row)