diff --git a/src/client/src/tscLocal.c b/src/client/src/tscLocal.c
index 41151803e15326632cc667fbf977afcdb53e73e2..25e1513b473059dbe8b61aab6adaa9203e226fb4 100644
--- a/src/client/src/tscLocal.c
+++ b/src/client/src/tscLocal.c
@@ -215,23 +215,13 @@ static int32_t tscProcessDescribeTable(SSqlObj *pSql) {
   return tscSetValueToResObj(pSql, rowLen);
 }
 static int32_t tscGetNthFieldResult(TAOS_ROW row, TAOS_FIELD* fields, int *lengths, int idx, char *result) {
-  char *val = (char*)row[idx];
+  const char *val = (const char*)row[idx];
   if (val == NULL) {
     sprintf(result, "%s", TSDB_DATA_NULL_STR);
     return -1;
   } 
   uint8_t type = fields[idx].type;
-  int32_t length = lengths[idx]; 
-
-  if (type == TSDB_DATA_TYPE_JSON){
-    char* p = val;
-    type = *p;
-    val += CHAR_BYTES;
-    if(type == TSDB_DATA_TYPE_NCHAR) {
-      length = varDataLen(val);
-      val = varDataVal(val);
-    }
-  }
+  int32_t length = lengths[idx];
 
   switch (type) {
     case TSDB_DATA_TYPE_BOOL: 
@@ -257,6 +247,7 @@ static int32_t tscGetNthFieldResult(TAOS_ROW row, TAOS_FIELD* fields, int *lengt
       break;
     case TSDB_DATA_TYPE_NCHAR:
     case TSDB_DATA_TYPE_BINARY:
+    case TSDB_DATA_TYPE_JSON:
       memcpy(result, val, length); 
       break;
     case TSDB_DATA_TYPE_TIMESTAMP:
diff --git a/src/kit/shell/src/shellEngine.c b/src/kit/shell/src/shellEngine.c
index 1283183441a2961520eceb10635f759da7af5c13..a6cc5a76cba02d3564ea917e7be9906349ee28d3 100644
--- a/src/kit/shell/src/shellEngine.c
+++ b/src/kit/shell/src/shellEngine.c
@@ -470,23 +470,12 @@ static char* formatTimestamp(char* buf, int64_t val, int precision) {
 }
 
 
-static void dumpFieldToFile(FILE* fp, char* val, TAOS_FIELD* field, int32_t length, int precision) {
+static void dumpFieldToFile(FILE* fp, const char* val, TAOS_FIELD* field, int32_t length, int precision) {
   if (val == NULL) {
     fprintf(fp, "%s", TSDB_DATA_NULL_STR);
     return;
   }
 
-  uint8_t type = field->type;
-  if (type == TSDB_DATA_TYPE_JSON){
-    char* p = val;
-    type = *p;
-    val += CHAR_BYTES;
-    if(type == TSDB_DATA_TYPE_NCHAR) {
-      length = varDataLen(val);
-      val = varDataVal(val);
-    }
-  }
-
   char buf[TSDB_MAX_BYTES_PER_ROW];
   switch (field->type) {
     case TSDB_DATA_TYPE_BOOL:
@@ -567,7 +556,7 @@ static int dumpResultToFile(const char* fname, TAOS_RES* tres) {
       if (i > 0) {
         fputc(',', fp);
       }
-      dumpFieldToFile(fp, row[i], fields +i, length[i], precision);
+      dumpFieldToFile(fp, (const char*)row[i], fields +i, length[i], precision);
     }
     fputc('\n', fp);
 
@@ -646,7 +635,7 @@ static void shellPrintNChar(const char *str, int length, int width) {
 }
 
 
-static void printField(char* val, TAOS_FIELD* field, int width, int32_t length, int precision) {
+static void printField(const char* val, TAOS_FIELD* field, int width, int32_t length, int precision) {
   if (val == NULL) {
     int w = width;
     if (field->type < TSDB_DATA_TYPE_TINYINT || field->type > TSDB_DATA_TYPE_DOUBLE) {
@@ -659,19 +648,8 @@ static void printField(char* val, TAOS_FIELD* field, int width, int32_t length,
     return;
   }
 
-  uint8_t type = field->type;
-  if (type == TSDB_DATA_TYPE_JSON){
-    char* p = val;
-    type = *p;
-    val += CHAR_BYTES;
-    if(type == TSDB_DATA_TYPE_NCHAR) {
-      length = varDataLen(val);
-      val = varDataVal(val);
-    }
-  }
-
   char buf[TSDB_MAX_BYTES_PER_ROW];
-  switch (type) {
+  switch (field->type) {
     case TSDB_DATA_TYPE_BOOL:
       printf("%*s", width, ((((int32_t)(*((char *)val))) == 1) ? "true" : "false"));
       break;
@@ -707,6 +685,7 @@ static void printField(char* val, TAOS_FIELD* field, int width, int32_t length,
       break;
     case TSDB_DATA_TYPE_BINARY:
     case TSDB_DATA_TYPE_NCHAR:
+    case TSDB_DATA_TYPE_JSON:
       shellPrintNChar(val, length, width);
       break;
     case TSDB_DATA_TYPE_TIMESTAMP:
@@ -768,7 +747,7 @@ static int verticalPrintResult(TAOS_RES* tres) {
         int padding = (int)(maxColNameLen - strlen(field->name));
         printf("%*.s%s: ", padding, " ", field->name);
 
-        printField(row[i], field, 0, length[i], precision);
+        printField((const char*)row[i], field, 0, length[i], precision);
         putchar('\n');
       }
     } else if (showMore) {
@@ -898,7 +877,7 @@ static int horizontalPrintResult(TAOS_RES* tres) {
     if (numOfRows < resShowMaxNum) {
       for (int i = 0; i < num_fields; i++) {
         putchar(' ');
-        printField(row[i], fields + i, width[i], length[i], precision);
+        printField((const char*)row[i], fields + i, width[i], length[i], precision);
         putchar(' ');
         putchar('|');
       }