case_insensitive_comparison

# File activerecord/lib/active_record/connection_adapters/abstract_adapter.rb, line 421
      def case_insensitive_comparison(table, attribute, column, value)
        if can_perform_case_insensitive_comparison_for?(column)
          table[attribute].lower.eq(table.lower(Arel::Nodes::BindParam.new))
        else
          table[attribute].eq(Arel::Nodes::BindParam.new)
        end
      end