select_value

# File activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb, line 52
      def select_value(arel, name = nil, binds = [])
        arel, binds = binds_from_relation arel, binds
        if result = select_rows(to_sql(arel, binds), name, binds).first
          result.first
        end
      end