将ruby on rails应用程序的数据库从sql server转换为mysql

我克隆了一个ruby on rails应用程序，它带有

sql server

，其中有些代码如下：

# Gemfile
gem 'tiny_tds'
gem 'activerecord-sqlserver-adapter', '~> 4.2.0'

和

database.yml

default: &default
  adapter: sqlserver
  azure: true

development: &development
  <<: *default
  host:     <%= ENV['DATABASE_HOST'] %>
  database: <%= ENV['DATABASE_NAME'] %>
  username: <%= ENV['DATABASE_USER'] %>
  password: <%= ENV['DATABASE_PASS'] %>

development_vehicle: &development_vehicle
  <<: *default
  host:     <%= ENV['DATABASE_VEHICLE_HOST'] || ENV['DATABASE_HOST'] %>
  database: <%= ENV['DATABASE_VEHICLE_NAME'] || ENV['DATABASE_NAME'] %>
  username: <%= ENV['DATABASE_VEHICLE_USER'] || ENV['DATABASE_USER'] %>
  password: <%= ENV['DATABASE_VEHICLE_PASS'] || ENV['DATABASE_PASS'] %>

development_aspnet: &development_aspnet
  <<: *default
  host:     <%= ENV['DATABASE_ASPNETDB_HOST'] || ENV['DATABASE_HOST'] %>
  database: <%= ENV['DATABASE_ASPNETDB_NAME'] || ENV['DATABASE_NAME'] %>
  username: <%= ENV['DATABASE_ASPNETDB_USER'] || ENV['DATABASE_USER'] %>
  password: <%= ENV['DATABASE_ASPNETDB_PASS'] || ENV['DATABASE_PASS'] %>

default:&default
适配器：sqlserver
azure:是的
开发：&开发
Gemfile
config/database.yml
default:&default
适配器：mysql2
游泳池：5
超时：5000
用户名：root#mysql用户名
密码：root#mysql密码
发展：
Gemfile
config/database.yml
default:&default
适配器：mysql2
游泳池：5
超时：5000
用户名：root#mysql用户名
密码：root#mysql密码
发展：
添加mysql2 gem并删除sql server所需的其他连接gem

# Gemfile
# gem 'tiny_tds'
# gem 'activerecord-sqlserver-adapter', '~> 4.2.0'
gem 'mysql2'

database.yml

default: &default
  adapter: mysql2
  encoding: utf8
  pool: 5
  socket: /tmp/mysql.sock

development: &development
  <<: *default
  host:     yourhostfordevelopement # commonly localhost
  database: yourdb # for development
  username: dbusername # commonly root
  password: dbpasseord # password you configured

development_vehicle: &development_vehicle
  <<: *default
  host:     yourhostfordevelopement # commonly localhost
  database: yourdb # for development_vehicle
  username: dbusername # commonly root
  password: dbpasseord # password you configured

development_aspnet: &development_aspnet
  <<: *default
  host:     yourhostfordevelopement # commonly localhost
  database: yourdb # for development_aspnet
  username: dbusername # commonly root
  password: dbpasseord # password you configured

default:&default
适配器：mysql2
编码：utf8
游泳池：5
socket:/tmp/mysql.sock
开发：&开发
添加mysql2 gem并删除sql server所需的其他连接gem

# Gemfile
# gem 'tiny_tds'
# gem 'activerecord-sqlserver-adapter', '~> 4.2.0'
gem 'mysql2'

database.yml

default: &default
  adapter: mysql2
  encoding: utf8
  pool: 5
  socket: /tmp/mysql.sock

development: &development
  <<: *default
  host:     yourhostfordevelopement # commonly localhost
  database: yourdb # for development
  username: dbusername # commonly root
  password: dbpasseord # password you configured

development_vehicle: &development_vehicle
  <<: *default
  host:     yourhostfordevelopement # commonly localhost
  database: yourdb # for development_vehicle
  username: dbusername # commonly root
  password: dbpasseord # password you configured

development_aspnet: &development_aspnet
  <<: *default
  host:     yourhostfordevelopement # commonly localhost
  database: yourdb # for development_aspnet
  username: dbusername # commonly root
  password: dbpasseord # password you configured

default:&default
适配器：mysql2
编码：utf8
游泳池：5
socket:/tmp/mysql.sock
开发：&开发
没有必要在mysql中添加主机？我试着这样做，我可以用
rake db:create
创建数据库，通过
rake db:migration
进行迁移时出错：
NameError:uninitialized constant ActiveRecord:：ConnectionAdapters:：SQLServerAdapter
，我们还需要其他方法吗？我仍然得到相同的错误，你能检查我更新的问题以查看
db
文件夹吗。这与mysql
db/migrate
文件夹不同。原因是什么？重命名文件夹名sqls以迁移或尝试运行commad rake db:sqlsit仍然不正常，可能是因为在
sqls
文件夹中，我有一组
.sql
文件，而不是
.rb
文件类似于
migrate
folder没有必要在mysql中添加主机？我尝试这样做，我可以使用
rake db:create
创建数据库，通过
rake db:migration
进行迁移时会出现错误：
NameError:uninitialized constant ActiveRecord:：ConnectionAdapters:：SQLServerAdapter
，我们需要其他方法吗？我仍然会遇到同样的错误，请检查我更新的问题以查看
db
文件夹。这与mysql
db/migrate
文件夹不同。原因是什么？重命名文件夹名sqls以迁移或尝试运行commad rake db:sqlsit仍然不正常，可能是因为在
sqls
文件夹中，我有一组
.sql
文件，而不是
.rb
文件，就像
migrate
foldermany谢谢，我用
rake db:create
创建了数据库，你能帮我用
db
文件夹迁移数据库吗？非常感谢，我用
rake db:create
创建了数据库，你能帮我用
db
文件夹迁移数据库吗？