diff --git a/tests/script/tsim/query/charScalarFunction.sim b/tests/script/tsim/query/charScalarFunction.sim
index 13108fecb7a651972f02ecd566721c67b4c8a0a3..d601405c12bf1df8e980b5d07a060abbe4fc7c4d 100644
--- a/tests/script/tsim/query/charScalarFunction.sim
+++ b/tests/script/tsim/query/charScalarFunction.sim
@@ -83,6 +83,14 @@ sql insert into ntb5 values ("2022-01-01 00:00:00.000" , "0123456789" , "0123456
 sql insert into ctb5 values ("2022-01-01 00:00:00.001" , NULL , NULL )
 sql insert into ntb5 values ("2022-01-01 00:00:00.001" , NULL , NULL )
 
+sql create table stb3 (ts timestamp, c1 binary(64), c2 nchar(64), c3 nchar(64) ) tags (t1 nchar(64))
+sql create table ctb6 using stb3 tags("tag-nchar-6")
+sql create table ntb6 (ts timestamp, c1 binary(64), c2 nchar(64), c3 nchar(64) )
+sql insert into ctb6 values ("2022-01-01 00:00:00.000" , "0123456789" , "中文测试1" , "中文测试2" )
+sql insert into ntb6 values ("2022-01-01 00:00:00.000" , "0123456789" , "中文测试01", "中文测试01" )
+sql insert into ctb6 values ("2022-01-01 00:00:00.001" , NULL , NULL, NULL )
+sql insert into ntb6 values ("2022-01-01 00:00:00.001" , NULL , NULL, NULL )
+
 $loop_test = 0
 loop_test_pos:
 
@@ -150,6 +158,210 @@ if $data01 != 12 then
   return -1
 endi
 
+print ====> select c2 ,length(c2), char_length(c2) from ctb6
+sql select c2 ,length(c2), char_length(c2) from ctb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 20 then
+  return -1
+endi
+if $data02 != 5 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
+print ====> select c2 ,length(c2),char_length(c2) from ntb6
+sql select c2 ,length(c2),char_length(c2) from ntb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 24 then
+  return -1
+endi
+if $data02 != 6 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
+print ====> select c2 ,lower(c2), upper(c2) from ctb6
+sql select c2 ,lower(c2), upper(c2) from ctb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 中文测试1 then
+  return -1
+endi
+if $data02 != 中文测试1 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
+print ====> select c2 ,lower(c2), upper(c2) from ntb6
+sql select c2 ,lower(c2), upper(c2) from ntb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 中文测试01 then
+  return -1
+endi
+if $data02 != 中文测试01 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
+print ====> select c2, ltrim(c2), ltrim(c2) from ctb6
+sql select c2, ltrim(c2), ltrim(c2) from ctb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 中文测试1 then
+  return -1
+endi
+if $data02 != 中文测试1 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
+print ====> select c2, ltrim(c2), ltrim(c2) from ntb6
+sql select c2, ltrim(c2), ltrim(c2) from ntb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 中文测试01 then
+  return -1
+endi
+if $data02 != 中文测试01 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
+print ====> select c2, c3 , concat(c2,c3) from ctb6
+sql select c2, c3 , concat(c2,c3) from ctb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data02 != 中文测试01中文测试01 then
+  return -1
+endi
+if $data12 != NULL then
+  return -1
+endi
+
+print ====> select c2, c3 , concat(c2,c3) from ntb6
+sql select c2, c3 , concat(c2,c3) from ntb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data02 != 中文测试01中文测试01 then
+  return -1
+endi
+if $data12 != NULL then
+  return -1
+endi
+
+print ====> select c2, c3 , concat_ws('_', c2, c3) from ctb6
+sql select c2, c3 , concat_ws('_', c2, c3) from ctb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data02 != 中文测试01_中文测试01 then
+  return -1
+endi
+if $data12 != NULL then
+  return -1
+endi
+
+print ====> select c2, c3 , concat_ws('_', c2, c3) from ntb6
+sql select c2, c3 , concat_ws('_', c2, c3) from ntb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data02 != 中文测试01_中文测试01 then
+  return -1
+endi
+if $data12 != NULL then
+  return -1
+endi
+
+print ====> select  c2, substr(c2,1, 4) from ctb6
+sql select  c2, substr(c2,1, 4) from ctb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 中文测试01 then
+  return -1
+endi
+if $data02 != 中文测试01 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
+print ====> select  c2, substr(c2,1, 4) from ntb6
+sql select  c2, substr(c2,1, 4) from ntb6
+print ====> rows: $rows
+print ====> $data00 $data01 $data02
+print ====> $data10 $data11 $data12
+if $rows != 2 then
+  return -1
+endi
+if $data01 != 中文测试01 then
+  return -1
+endi
+if $data02 != 中文测试01 then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+
 #sql_error select c1, length(t1), c2, length(t2) from ctb0
 
 print ====> char_length
@@ -493,7 +705,7 @@ if $loop_test == 0 then
   print =============== stop and restart taosd
   system sh/exec.sh -n dnode1 -s stop -x SIGINT
   system sh/exec.sh -n dnode1 -s start
-  
+
   $loop_cnt = 0
   check_dnode_ready_0:
   	$loop_cnt = $loop_cnt + 1
@@ -511,7 +723,7 @@ if $loop_test == 0 then
     goto check_dnode_ready_0
   endi
 
-  $loop_test = 1  
+  $loop_test = 1
   goto loop_test_pos
 endi