耙子中止了！ 不知道如何建立任务'up'

 

我在迁移时遇到了麻烦。 感谢您分享您的时间，并感谢您的帮助！

  • Windows 7（64位）
  • Ruby：1.9.2p290
  • Rails：3.2.3
  • MySQL：5.5.24 
    • > rake db:migrate up VERSION=20120529170841 --trace
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config (first_time)
** Invoke rails_env (first_time)
** Execute rails_env
** Execute db:load_config
** Execute db:migrate
** Invoke db:_dump (first_time)
** Execute db:_dump
** Invoke db:schema:dump (first_time)
** Invoke environment
** Invoke db:load_config
** Execute db:schema:dump
rake aborted!
Don't know how to build task 'up'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task_manager.rb:49:in
`[]'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:115:in
`invoke_task'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `
block (2 levels) in top_level'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `
each'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `
block in top_level'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in
`standard_exception_handling'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `
top_level'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `
block in run'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in
`standard_exception_handling'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `
run'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/bin/rake:33:in `'
C:/Ruby192/bin/rake:23:in `load'
C:/Ruby192/bin/rake:23:in `'

    正确的语法是 

    rake db:migrate:up VERSION=2012052917

    而不是（ rake db:migrate up ... ）

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