如何将MS SQL数据库连接到Ruby

Question

我正在尝试将MS SQL数据库连接到我的Ruby程序，以运行只读查询。 我尝试使用Sequel，Ruby-DBI和TinyTDS无济于事。

这是我与Sequel连接的代码：

require 'rubygems'
require 'sequel'

hostname = 'DB name'
username = 'username here'
password = 'password here'
port = 1433

connection_instance = Sequel.connect(:host => hostname, :user => username, :password => password, :test => true) 

这是我收到的错误：

C:/Ruby22-x64/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
: LoadError: cannot load such file -- sequel/adapters/ (Sequel::AdapterNotFound)

        from C:/Ruby22-x64/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sequel-4.35.0/lib/sequel/database/connecting.rb:98:in `load_adapter'
        from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sequel-4.35.0/lib/sequel/database/connecting.rb:28:in `adapter_class'
        from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sequel-4.35.0/lib/sequel/database/connecting.rb:56:in `connect'
        from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sequel-4.35.0/lib/sequel/core.rb:108:in `connect'
        from snippet.rb:11:in `<main>'

Answer 1

我使用tinytds与：

      @db = Sequel.tinytds(
        :host     =>  options['dbserver'], 
        :database=> options['db'],      
        :user       => options['dbuser'],
        :password=> options['dbpwd'],
        #:timeout => options['timeout'], #for long lasting requests
      )              

过去我使用了ado，但是使用ado时遇到了一些问题（编码错误，超时...）