我不得不改变表，视图和序列的所有权，并发现@rjk发布的伟大解决方案工作得很好-尽管有一个细节: 如果对象名称是大小写混合的(例如。"TableName")，这将失败，并报错"not found"。 为了避免这种情况，可以像这样用' " '来包装对象名称:

表

SELECT 'ALTER TABLE \"'|| schemaname || '.' || tablename ||'\" OWNER TO my_new_owner;'
FROM pg_tables WHERE NOT schemaname IN ('pg_catalog', 'information_schema')
ORDER BY schemaname, tablename;

序列

SELECT 'ALTER SEQUENCE \"'|| sequence_schema || '.' || sequence_name ||'\" OWNER TO my_new_owner;'
FROM information_schema.sequences WHERE NOT sequence_schema IN ('pg_catalog', 'information_schema')
ORDER BY sequence_schema, sequence_name;

的观点

SELECT 'ALTER VIEW \"'|| table_schema || '.' || table_name ||'\" OWNER TO my_new_owner;'
FROM information_schema.views WHERE NOT table_schema IN ('pg_catalog', 'information_schema')
ORDER BY table_schema, table_name;

很简单，试试看…

 select 'ALTER TABLE ' || table_name || ' OWNER TO myuser;' from information_schema.tables where table_schema = 'public';

根据elysch的回答，这里有一个针对多个模式的解决方案:

DO $$
DECLARE 
  r record;
  i int;
  v_schema text[] := '{public,schema1,schema2,schema3}';
  v_new_owner varchar := 'my_new_owner';
BEGIN
    FOR r IN 
        select 'ALTER TABLE "' || table_schema || '"."' || table_name || '" OWNER TO ' || v_new_owner || ';' as a from information_schema.tables where table_schema = ANY (v_schema)
        union all
        select 'ALTER TABLE "' || sequence_schema || '"."' || sequence_name || '" OWNER TO ' || v_new_owner || ';' as a from information_schema.sequences where sequence_schema = ANY (v_schema)
        union all
        select 'ALTER TABLE "' || table_schema || '"."' || table_name || '" OWNER TO ' || v_new_owner || ';' as a from information_schema.views where table_schema = ANY (v_schema)
        union all
        select 'ALTER FUNCTION "'||nsp.nspname||'"."'||p.proname||'"('||pg_get_function_identity_arguments(p.oid)||') OWNER TO ' || v_new_owner || ';' as a from pg_proc p join pg_namespace nsp ON p.pronamespace = nsp.oid where nsp.nspname = ANY (v_schema)
        union all
        select 'ALTER DATABASE "' || current_database() || '" OWNER TO ' || v_new_owner 
    LOOP
        EXECUTE r.a;
    END LOOP;
    FOR i IN array_lower(v_schema,1) .. array_upper(v_schema,1)
    LOOP
        EXECUTE 'ALTER SCHEMA "' || v_schema[i] || '" OWNER TO ' || v_new_owner ;
    END LOOP;
END
$$;

重新分配所有没有为我工作，因为我想改变由postgres拥有的表。

我最终使用Alex的方法，但我想从psql中做到这一点。下面这些对我来说就足够了。

DO $$
DECLARE
    rec record;
BEGIN
    FOR rec in 
        SELECT *
        FROM pg_tables
        where schemaname = 'public'
LOOP
    EXECUTE 'alter table ' || quote_ident(rec.tablename) || ' owner to new_owner';
    END LOOP;
END
$$;

我为此创建了一个方便的脚本;pg_change_db_owner.sh。此脚本更改数据库模式中所有表、视图、序列和函数的所有权，以及模式本身的所有者。

请注意，如果你只是想改变一个特定数据库中所有对象的所有权， ，那么您可以简单地使用REASSIGN owned命令来代替。

如果希望在一条sql语句中完成，则需要定义一个exec()函数，如http://wiki.postgresql.org/wiki/Dynamic_DDL中所述

CREATE FUNCTION exec(text) returns text language plpgsql volatile
  AS $f$
    BEGIN
      EXECUTE $1;
      RETURN $1;
    END;
$f$;

然后你可以执行这个查询，它会改变表，序列和视图的所有者:

SELECT exec('ALTER TABLE ' || quote_ident(s.nspname) || '.' ||
            quote_ident(s.relname) || ' OWNER TO $NEWUSER')
  FROM (SELECT nspname, relname
          FROM pg_class c JOIN pg_namespace n ON (c.relnamespace = n.oid) 
         WHERE nspname NOT LIKE E'pg\\_%' AND 
               nspname <> 'information_schema' AND 
               relkind IN ('r','S','v') ORDER BY relkind = 'S') s;

$NEWUSER是新所有者的postgresql新名称。

在大多数情况下，您需要超级用户才能执行此操作。可以通过将所有者从您自己的用户更改为您所属的角色组来避免这种情况。

感谢RhodiumToad在#postgresql上的帮助。