quote

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 428
      def quote(value, column = nil) #:nodoc:
        return super unless column

        case value
        when Float
          return super unless value.infinite? && column.type == :datetime
          "'#{value.to_s.downcase}'"
        when Numeric
          return super unless column.sql_type == 'money'
          # Not truly string input, so doesn't require (or allow) escape string syntax.
          "'#{value}'"
        when String
          case column.sql_type
          when 'bytea' then "'#{escape_bytea(value)}'"
          when 'xml'   then "xml '#{quote_string(value)}'"
          when /^bit/
            case value
            when /^[01]*$/      then "B'#{value}'" # Bit-string notation
            when /^[0-9A-F]*$/ then "X'#{value}'" # Hexadecimal notation
            end
          else
            super
          end
        else
          super
        end
      end