case_sensitive_comparison

# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 599
      def case_sensitive_comparison(attribute, value) # :nodoc:
        column = column_for_attribute(attribute)

        if column.collation && !column.case_sensitive?
          attribute.eq(Arel::Nodes::Bin.new(value))
        else
          super
        end
      end