我正在使用postgres编写rails项目,服务器中有一些数据。我想把数据从远端转储到本地,所以我写脚本来做,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}"
有一些代码需要运输..
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 script 时出现了一些错误*:
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: ""
...
本地的数据库不会更新。 我想知道如何解决它?添加一些参数?提前谢谢。
答案 0 :(得分:9)
您可以使用-c
或--clean
参数pg_dump。该参数将在运行命令之前删除现有数据库对象以创建它们。
另一种方法是在恢复之前自己删除这些对象。 (可能使用drop schema
或drop database
。)
谨慎使用。