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rake db commands
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| rails g migration Add[*]And[#]To[TableName] *:string #:boolean | |
| rails g migration Remove[*]From[TableName] *:integer | |
| rake db:migrate | |
| rake db:rollback | |
| rake db:schema:dump | |
| rake db:setup | |
| # Migration commands | |
| add_column | |
| remove_column | |
| rename_column | |
| rename_table | |
| drop_table | |
| change_table | |
| change_column_default | |
| # More info | |
| http://guides.rubyonrails.org/migrations.html |
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