下面这个更简单的shell脚本适合我。

#!/bin/bash
for i in  `psql -U $1  -qt -c  "select tablename from pg_tables where schemaname='$2'"`
do
psql -U $1 -c  "alter table $2.$i set schema $3"
done

其中输入$1 -用户名(数据库) $2 =现有模式 $3 =新模式。

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。

如果当前所有者不是postgres，你可以使用这个:

REASSIGN OWNED BY old_role [, ...] TO new_role

但如果当前的所有者是postgres，你肯定会得到错误，所以你必须使用@dvanrensburg回答，但如果你想在相同的sql中执行命令，可以根据需要使用这些命令:

数据库

ALTER DATABASE target_database OWNER TO new_onwer;

表

DO
LANGUAGE plpgsql
$$
DECLARE
  stmt text;
BEGIN
  FOR stmt IN
    WITH temp as (
    SELECT 'ALTER TABLE '|| schemaname || '."' || tablename ||'" OWNER TO newuser' as command
    FROM pg_tables WHERE NOT schemaname IN ('pg_catalog', 'information_schema')
    ORDER BY schemaname, tablename )
    SELECT command from temp
  LOOP
    EXECUTE stmt;
  END LOOP;
END;
$$;

序列

DO
LANGUAGE plpgsql
$$
DECLARE
  stmt text;
BEGIN
  FOR stmt IN
    WITH temp as (
    SELECT 'ALTER SEQUENCE '|| sequence_schema || '."' || sequence_name ||'" OWNER TO newuser;' as command
    FROM information_schema.sequences WHERE NOT sequence_schema IN ('pg_catalog', 'information_schema')
    ORDER BY sequence_schema, sequence_name)
    select command from temp
  LOOP
    EXECUTE stmt;
  END LOOP;
END;
$$;

的观点

DO
LANGUAGE plpgsql
$$
DECLARE
  stmt text;
BEGIN
  FOR stmt IN
    WITH temp as (
    SELECT 'ALTER VIEW '|| table_schema || '."' || table_name ||'" OWNER TO newuser;' as command
    FROM information_schema.views WHERE NOT table_schema IN ('pg_catalog', 'information_schema')
    ORDER BY table_schema, table_name)
    select command from temp
  LOOP
    EXECUTE stmt;
  END LOOP;
END;
$$;

模式

DO
LANGUAGE plpgsql
$$
DECLARE
  stmt text;
BEGIN
  FOR stmt IN
    WITH schema_names as(
    SELECT distinct(schemaname) FROM pg_tables WHERE NOT schemaname IN ('pg_catalog', 'information_schema')
    ORDER BY schemaname)
    SELECT 'ALTER SCHEMA '|| schemaname ||' OWNER TO newuser;' as command
    FROM schema_names
  LOOP
    EXECUTE stmt;
  END LOOP;
END;
$$;

还要注意数据库中可能需要更改成员关系的函数和其他组件

函数和触发函数

    DO
    LANGUAGE plpgsql
    $$
    DECLARE
      stmt text;
    BEGIN
      FOR stmt IN
        WITH temp as(
        SELECT 'alter function '||nsp.nspname||'.'||p.proname||'('||pg_get_function_identity_arguments(p.oid)||') owner to newuser;' as command
        FROM pg_proc p
        JOIN pg_namespace nsp ON p.pronamespace = nsp.oid
        WHERE NOT  nsp.nspname IN ('pg_catalog', 'information_schema'))
        SELECT command FROM temp
      LOOP
        EXECUTE stmt;
      END LOOP;
    END;
    $$;

对于表，你必须循环:

for tbl in `psql -qAt -c "select tablename from pg_tables where schemaname = 'public';" YOUR_DB` ; do  psql -U postgres -c "alter table \"$tbl\" owner to NEW_USER" YOUR_DB ; done

在PostgreSQL中没有这样的命令。但是您可以使用我之前为GRANTs描述的方法来解决它。

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。