def sql_connection(options={}, &block)
      @sql_connection ||= Mongify::Database::SqlConnection.new(options)
      @sql_connection.instance_exec(&block) if block_given?
      @sql_connection
    end
def sql_connection(options={}, &block)
      @sql_connection ||= Mongify::Database::SqlConnection.new(options)
      @sql_connection.instance_exec(&block) if block_given?
      @sql_connection
    end
Returns a sql_connection
 If a block is given, it will be executed on the connection
 For more information, see {Mongify::Database::SqlConnection}