我正在使用 postgres 编写一个 rails 项目，并且服务器中有一些数据。我想将数据从远程端转储到本地，所以我编写了脚本来执行它，但是出现了一些错误。
这是转储脚本：
run "PGPASSWORD='#{remote_settings['password']}'
pg_dump -U #{remote_settings["username"]} #{"-h '#{remote_settings["host"]}'"
if remote_settings["host"]}
'#{remote_settings["database"]}' > #{remote_sql_file_path}"
有一些代码可以传输..
Transport codes
这是恢复脚本：
run_locally "PGPASSWORD='#{local_settings['password']}' psql -U
#{local_settings["username"]} -d #{local_settings["database"]}
-f #{local_sql_file_path}"
我成功获取了数据文件，但是当运行**restore 脚本时出现一些错误*：
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:46: ERROR: relation "refinery_images" already exists
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:49: ERROR: role "ib5k" does not exist
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:60: ERROR: relation "refinery_images_id_seq" already exists
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:63: ERROR: role "ib5k" does not exist
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:83: ERROR: relation "refinery_page_part_translations" already exists
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:86: ERROR: role "ib5k" does not exist
...
sql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:525: ERROR: duplicate key value violates unique constraint "refinery_images_pkey"
DETAIL: Key (id)=(1) already exists.
CONTEXT: COPY refinery_images, line 2: ""
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:547: ERROR: duplicate key value violates unique constraint "refinery_page_part_translations_pkey"
DETAIL: Key (id)=(1) already exists.
CONTEXT: COPY refinery_page_part_translations, line 8: ""
psql:tmp/production-ib5k_production-2013-02-21_18:42:09.sql:569: ERROR: duplicate key value violates unique constraint "refinery_page_parts_pkey"
DETAIL: Key (id)=(1) already exists.
CONTEXT: COPY refinery_page_parts, line 8: ""
...
并且本地的数据库不会更新。我想知道怎么解决？添加一些论据？先感谢您。