diff --git a/source/libs/parser/src/parUtil.c b/source/libs/parser/src/parUtil.c
index 0ff5843736faeb321fb042bfae9549e7cc6d880e..7f945eb70cee298eec3d5c37f071ce108f60b84f 100644
--- a/source/libs/parser/src/parUtil.c
+++ b/source/libs/parser/src/parUtil.c
@@ -262,7 +262,6 @@ int32_t trimString(const char* src, int32_t len, char* dst, int32_t dlen) {
     j++;
   }
   dst[j] = '\0';
-  strtrim(dst);
   return j;
 }
 
diff --git a/source/libs/scalar/src/sclvector.c b/source/libs/scalar/src/sclvector.c
index ae8c395997950f3f24c810e89caf806e06632744..d484738328554cc5d830f5e31d0332b485c5a9f1 100644
--- a/source/libs/scalar/src/sclvector.c
+++ b/source/libs/scalar/src/sclvector.c
@@ -287,7 +287,6 @@ static FORCE_INLINE void varToNchar(char* buf, SScalarParam* pOut, int32_t rowIn
 
 //TODO opt performance, tmp is not needed.
 int32_t vectorConvertFromVarData(const SScalarParam* pIn, SScalarParam* pOut, int32_t inType, int32_t outType) {
-  ASSERT(!IS_VAR_DATA_TYPE(outType));
   int32_t bufSize = pIn->columnData->info.bytes;
   char *tmp = taosMemoryMalloc(bufSize + VARSTR_HEADER_SIZE);
 
diff --git a/tools/shell/src/shellEngine.c b/tools/shell/src/shellEngine.c
index e8f53ef9810e876ef4053d249271e557dd08d65e..ca5bf69795060d84025fb3d90e2b3f118f183846 100644
--- a/tools/shell/src/shellEngine.c
+++ b/tools/shell/src/shellEngine.c
@@ -761,7 +761,8 @@ static int calcColWidth(TAOS_FIELD *field, int precision) {
         return TMAX(field->bytes, width);
       }
 
-    case TSDB_DATA_TYPE_NCHAR: {
+    case TSDB_DATA_TYPE_NCHAR:
+    case TSDB_DATA_TYPE_JSON:{
       int16_t bytes = field->bytes * TSDB_NCHAR_SIZE;
       if (bytes > tsMaxBinaryDisplayWidth) {
         return TMAX(tsMaxBinaryDisplayWidth, width);