declare@v_TradingTimedatetimeset@v_TradingTime='2008-05-05'selectsecucode,casesum(sign(updownratio))when3then1when-3then-1else0endasupdown--在这段时间(@v_TradingTime/dateadd(d,-20,@v_TradingTime))内存在的记录条数from(selectrow_number()over(par
系统 2019-08-29 22:50:40 2478
安装了ruby1.9.1后，把Rails也更新到了2.2.1,但创建项目时失败，报错：uninitializedconstantActiveSupport::SecureRandom后跟踪源码，发现加载：Active_Support.rb文件中：require'active_support/gzip'require'active_support/cache'require'active_support/dependencies'require'active
系统 2019-08-29 22:44:26 2478
