[td-225] update the script

tests/script/general/parser/sliding.sim

 system sh/stop_dnodes.sh
 
 system sh/deploy.sh -n dnode1 -i 1
-system sh/cfg.sh -n dnode1 -c walLevel -v 0
+system sh/cfg.sh -n dnode1 -c walLevel -v 1
 system sh/cfg.sh -n dnode1 -c debugFlag -v 135
 system sh/cfg.sh -n dnode1 -c rpcDebugFlag -v 135
 system sh/exec.sh -n dnode1 -s start
@@ -28,7 +28,7 @@ $mt = $mtPrefix . $i
 
 sql drop database if exits $db -x step1
 step1:
-sql create database if not exists $db tables 4 keep 36500
+sql create database if not exists $db maxtables 4 keep 36500
 sql use $db
 sql create table $mt (ts timestamp, c1 int, c2 float, c3 bigint, c4 smallint, c5 tinyint, c6 double, c7 bool, c8 binary(10), c9 nchar(9)) TAGS(t1 int, t2 binary(12))
 

tests/script/general/parser/union.sim

@@ -412,4 +412,8 @@ if $data10 != @union_db0@ then
   return -1
 endi
 
+sql_error show tables union all show tables
+sql_error show stables union all show stables
+sql_error show databases union all show databases
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file