sleep 3000
sql connect

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

$dbPrefix = m_di_db
$tbPrefix = m_di_tb
$mtPrefix = m_di_mt
$tbNum = 10
$rowNum = 20
$totalNum = 200

print =============== step1
$i = 0
$db = $dbPrefix . $i
$mt = $mtPrefix . $i

sql drop database $db -x step1
step1:
sql create database $db
sql use $db
sql create table $mt (ts timestamp, tbcol int) TAGS(tgcol int)

$i = 0
while $i < $tbNum
  $tb = $tbPrefix . $i
  sql create table $tb using $mt tags( $i )
  
  $x = 0
  while $x < $rowNum
    $ms = $x . m 
    sql insert into $tb values (now + $ms , $x ) 
    $x = $x + 1
  endw 
 
  $i = $i + 1
endw 

sleep 100

print =============== step2
$i = 1
$tb = $tbPrefix . $i

sql select diff(tbcol) from $tb
print ===> $data11
if $data11 != 1 then 
  return -1
endi

print =============== step3
sql select diff(tbcol) from $tb where ts > now + 4m
print ===> $data11
if $data11 != 1 then 
  return -1
endi

sql select diff(tbcol) from $tb where ts < now + 4m
print ===> $data11
if $data11 != 1 then 
  return -1
endi

print =============== step4
sql select diff(tbcol) as b from $tb
print ===> $data11
if $data11 != 1 then 
  return -1
endi

print =============== step5
sql select diff(tbcol) as b from $tb interval(1m) -x step5
  return -1
step5:

print =============== step6
sql select diff(tbcol) as b from $tb where ts < now + 4m interval(1m) -x step6
  return -1
step6:

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