耙子中止！不知道如何构建任务'up'

Question

我在迁移时遇到了问题。感谢您分享您的时间，并感谢您的帮助！

• 视窗7（64位）
• 红宝石：1.9.2p290
• 滑轨：3.2.3
• MySQL的：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 `' 

Answer 1

正确的语法是

rake db:migrate:up VERSION=2012052917 

i nstead（rake db:migrate up ...）