exec_explain

# File activerecord/lib/active_record/explain.rb, line 19
    def exec_explain(queries, options = []) # :nodoc:
      str = queries.map do |sql, binds|
        msg = +"#{build_explain_clause(options)} #{sql}"
        unless binds.empty?
          msg << " "
          msg << binds.map { |attr| render_bind(attr) }.inspect
        end
        msg << "\n"
        msg << connection_explain(sql, binds, options)
      end.join("\n")

      # Overriding inspect to be more human readable, especially in the console.
      def str.inspect
        self
      end

      str
    end