system sh/stop_dnodes.sh
system sh/deploy.sh -n dnode1 -i 1
system sh/exec.sh -n dnode1 -s start
sql connect

sql select b.z from (select c.a as z from (select 'a' as a) c) b;
if $rows != 1 then
  return -1
endi

system sh/exec.sh -n dnode1 -s stop -x SIGINT