system sh/stop_dnodes.sh system sh/deploy.sh -n dnode1 -i 1 system sh/exec.sh -n dnode1 -s start sql connect sql create database db sql create table db.tb (ts timestamp, i int) sql insert into db.tb values(now, 1) print ======== start back run_back tsim/db/back_insert.sim sleep 1000 print ======== step1 $x = 1 while $x < 10 print drop database times $x sql drop database if exists db sql create database db sql create table db.tb (ts timestamp, i int) sleep 1000 $x = $x + 1 endw system sh/exec.sh -n dnode1 -s stop -x SIGINT