supports_disable_referential_integrity?

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 380
      def supports_disable_referential_integrity?() #:nodoc:
        version = query("SHOW server_version")[0][0].split('.')
        version[0].to_i >= 8 && version[1].to_i >= 1
      rescue
        return false
      end