text: -- Verify postgraphile_user_system:users_graphql_subscription on pg
  
  BEGIN;
  
  SET SEARCH_PATH TO app_public,public;
  select 1/count(*)
  from pg_trigger t
  join pg_class c on (c.oid=t.tgrelid)
  where c.relname='users' and t.tgname='_500_gql_update';
  
  
  ROLLBACK;
  