make_comparison_predicate (test/src/sql_parser.rb)

    # File test/src/sql_parser.rb, line 114
      def make_comparison_predicate expr, rel
        comparison = sequence(Comparators, expr) do |op,e2|
          proc{|e1|ComparePredicate.new(e1, op, e2)}
        end
        in_clause = make_in expr
        not_in_clause = make_not_in expr
        in_relation = make_in_relation rel
        not_in_relation = make_not_in_relation rel
        between = make_between expr
        not_between = make_not_between expr
        compare_with = comparison | in_clause | not_in_clause |
            in_relation | not_in_relation | between | not_between
        sequence(expr, compare_with, &Feed)
      end