sql connect
sleep 3000

sql show databases
sql drop database $data00 -x e1
e1:
sql show databases
sql drop database $data00 -x e2
e2:

$i = 0
$dbPrefix = lm_bo_db
$tbPrefix = lm_bo_tb
$db = $dbPrefix . $i
$tb = $tbPrefix . $i

print =============== step1
sql create database $db
sql use $db
$x = 0
sql create table $tb (ts timestamp, speed bool)

sql insert into $tb values (now, true)
sql select * from $tb
if $rows != 1 then 
  return -1
endi

if $data01 != 1 then
  return -1
endi

print =============== step2
sql insert into $tb values (now+1m, 1)
sql select * from $tb order by ts desc
if $rows != 2 then 
  return -1
endi

if $data01 != 1 then
  return -1
endi

print =============== step3
sql insert into $tb values (now+2m, 2)
sql select * from $tb order by ts desc
if $rows != 3 then 
  return -1
endi

if $data01 != 1 then
  return -1
endi

print =============== step4
sql insert into $tb values (now+3m, 0)
sql select * from $tb order by ts desc
if $rows != 4 then 
  return -1
endi

if $data01 != 0 then
  return -1
endi

print =============== step5
sql insert into $tb values (now+4m, -1)
sql select * from $tb order by ts desc
if $rows != 5 then 
  return -1
endi

if $data01 != 1 then
  return -1
endi

print =============== step6
sql insert into $tb values (now+5m, false)
sql select * from $tb order by ts desc
if $rows != 6 then 
  return -1
endi

if $data01 != 0 then
  return -1
endi

sql drop database $db
sql show databases
if $rows != 0 then 
  return -1
endi