quote

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 331
      def quote(value, column = nil) #:nodoc:
        if value.kind_of?(String) && column && column.type == :binary
          "#{quoted_string_prefix}'#{column.class.string_to_binary(value)}'"
        elsif value.kind_of?(String) && column && column.sql_type =~ /^xml$/
          "xml '#{quote_string(value)}'"
        elsif value.kind_of?(Numeric) && column && column.sql_type =~ /^money$/
          # Not truly string input, so doesn't require (or allow) escape string syntax.
          "'#{value.to_s}'"
        elsif value.kind_of?(String) && column && column.sql_type =~ /^bit/
          case value
            when /^[01]*$/
              "B'#{value}'" # Bit-string notation
            when /^[0-9A-F]*$/i
              "X'#{value}'" # Hexadecimal notation
          end
        else
          super
        end
      end