[td-225] add test sim.

tests/script/general/parser/nchar.sim

 system sh/stop_dnodes.sh
 
-
 system sh/deploy.sh -n dnode1 -i 1
 system sh/cfg.sh -n dnode1 -c walLevel -v 1
 system sh/exec.sh -n dnode1 -s start

tests/script/general/parser/nestquery.sim

+system sh/stop_dnodes.sh
+
+system sh/deploy.sh -n dnode1 -i 1
+system sh/cfg.sh -n dnode1 -c walLevel -v 1
+system sh/exec.sh -n dnode1 -s start
+
+sleep 100
+sql connect
+
+print ======================== dnode1 start
+
+$dbPrefix = nest_query
+$tbPrefix = nest_tb
+$mtPrefix = nest_mt
+$tbNum = 10
+$rowNum = 10000
+$totalNum = $tbNum * $rowNum
+
+print =============== nestquery.sim
+$i = 0
+$db = $dbPrefix . $i
+$mt = $mtPrefix . $i
+
+sql drop database if exists $db -x step1
+step1:
+sql create database if not exists $db
+sql use $db
+sql create table $mt (ts timestamp, c1 int, c2 float, c3 bigint, c4 smallint, c5 tinyint, c6 double, c7 bool, c8 binary(10), c9 nchar(9)) TAGS(t1 int)
+
+$half = $tbNum / 2
+
+$i = 0
+while $i < $half
+  $tb = $tbPrefix . $i
+
+  $nextSuffix = $i + $half
+  $tb1 = $tbPrefix . $nextSuffix
+
+  sql create table $tb using $mt tags( $i )
+  sql create table $tb1 using $mt tags( $nextSuffix )
+
+  $x = 0
+  while $x < $rowNum
+    $y = $x * 60000
+    $ms = 1600099200000 + $y
+    $c = $x / 100
+    $c = $c * 100
+    $c = $x - $c
+    $binary = 'binary . $c
+    $binary = $binary . '
+    $nchar = 'nchar . $c
+    $nchar = $nchar . '
+    sql insert into $tb values ($ms , $c , $c , $c , $c , $c , $c , $c , $binary , $nchar )  $tb1 values ($ms , $c , $c , $c , $c , $c , $c , $c , $binary , $nchar )
+    $x = $x + 1
+  endw
+
+  $i = $i + 1
+endw
+
+sleep 100
+
+$i = 1
+$tb = $tbPrefix . $i
+sql select count(*) from (select
+
+system sh/exec.sh -n dnode1 -s stop -x SIGINT
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