instance method encode_range

# File activerecord/lib/active_record/connection_adapters/postgresql/quoting.rb, line 207
          def encode_range(range)
            lower_bound = type_cast_range_value(range.begin)
            upper_bound = if date_or_time_range?(range)
              # Postgres will convert `[today,]` to `[today,)`, making it exclusive.
              # We can use the special timestamp value `infinity` to force inclusion.
              # https://www.postgresql.org/docs/current/rangetypes.html#RANGETYPES-INFINITE
              range.end.nil? ? "infinity" : type_cast(range.end)
            else
              type_cast_range_value(range.end)
            end

            "[#{lower_bound},#{upper_bound}#{range.exclude_end? ? ')' : ']'}"
          end