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我出于某种原因删除了项目 robin_offine，当我重新启动它并运行时

rake db:create，它声称： 

robin_offline_development already exists  
robin_offline_test already exists

忽略它并添加迁移命名事件

如果耙分贝：迁移 

Mysql2::Error: Table 'events' already exists(cuz i have done that last time)

问题是，我找不到桌子在哪里 

SHOW DATABASES;  
+--------------------+  
| Database           |  
+--------------------+  
| information_schema |    
| test               |  
+--------------------+   
2 rows in set (0.00 sec)

甚至不知道删除哪一个

抱歉，我是 mysql 新手
，系统是 Ubuntu 12.04LTS

development:
adapter: mysql2
encoding: utf8
reconnect: false
database: robin_offline_development
pool: 5
username: root
password:
socket: /var/run/mysqld/mysqld.sock

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: robin_offline_test
  pool: 5
  username: root
  password:
  socket: /var/run/mysqld/mysqld.sock

production:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: robin_offline_production
  pool: 5
  username: root
  password:
  socket: /var/run/mysqld/mysqld.sock

我的迁移文件就是运行的 

rails g model events

没什么特别的

开发日志 

Connecting to database specified by database.yml
Connecting to database specified by database.yml
  [1m[36m (1.1ms)[0m  [1mSELECT `schema_migrations`.`version` FROM `schema_migrations` [0m
Migrating to CreateEvents (20121213091145)
  [1m[35m (0.5ms)[0m  CREATE TABLE `events` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `created_at` datetime NOT NULL, `updated_at` datetime NOT NULL) ENGINE=InnoDB
Mysql2::Error: Table 'events' already exists: CREATE TABLE `events` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `created_at` datetime NOT NULL, `updated_at` datetime NOT NULL) ENGINE=InnoDB
Connecting to database specified by database.yml
  [1m[36m (1.1ms)[0m  [1mSELECT `schema_migrations`.`version` FROM `schema_migrations` [0m
Migrating to CreateEvents (20121213091145)
  [1m[35m (0.5ms)[0m  CREATE TABLE `events` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `created_at` datetime NOT NULL, `updated_at` datetime NOT NULL) ENGINE=InnoDB
Mysql2::Error: Table 'events' already exists: CREATE TABLE `events` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `created_at` datetime NOT NULL, `updated_at` datetime NOT NULL) ENGINE=InnoDB
Connecting to database specified by database.yml
  [1m[36m (1.9ms)[0m  [1mSELECT `schema_migrations`.`version` FROM `schema_migrations` [0m
Migrating to CreateEvents (20121213091145)
  [1m[35m (0.5ms)[0m  CREATE TABLE `events` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `created_at` datetime NOT NULL, `updated_at` datetime NOT NULL) ENGINE=InnoDB
Mysql2::Error: Table 'events' already exists: CREATE TABLE `events` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `created_at` datetime NOT NULL, `updated_at` datetime NOT NULL) ENGINE=InnoDB
4

1 回答 1

0

我只是跑 

rake db:drop

并再次进行迁移，一切顺利

并rails db转到数据库并做任何你想做的事情。

于 2012-12-13T11:09:54.953 回答