diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index eda338bf739010596842079641d419a0721311d3..6b80257e255f852662bac280b8f12b3cb03c1a91 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -4619,7 +4619,10 @@ static int32_t handleExprInQueryCond(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSql
       //                ret = setExprToCond(pCmd, &pCondExpr->pTagCond,
       //                *pExpr, NULL, parentOptr);
       tSqlExpr *rexpr = NULL;
-      if ((*pExpr)->tokenId == TK_NE && (pSchema->type != TSDB_DATA_TYPE_BINARY && pSchema->type != TSDB_DATA_TYPE_NCHAR && pSchema->type != TSDB_DATA_TYPE_BOOL)) {
+      if ((*pExpr)->tokenId == TK_NE && (pSchema->type != TSDB_DATA_TYPE_BINARY
+                                         && pSchema->type != TSDB_DATA_TYPE_NCHAR
+                                         && pSchema->type != TSDB_DATA_TYPE_BOOL
+                                         && pSchema->type != TSDB_DATA_TYPE_JSON)) {
         handleNeOptr(&rexpr, *pExpr);
         *pExpr = rexpr;
       }
@@ -6063,10 +6066,6 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       return invalidOperationMsg(pMsg, msg14);
     }
 
-    if (pTagsSchema->type == TSDB_DATA_TYPE_JSON && (pItem->pVar.nLen > TSDB_MAX_TAGS_LEN)) {
-      return invalidOperationMsg(pMsg, msg14);
-    }
-
     int32_t schemaLen = sizeof(STColumn) * numOfTags;
     int32_t size = sizeof(SUpdateTableTagValMsg) + pTagsSchema->bytes + schemaLen + TSDB_EXTRA_PAYLOAD_SIZE;
 
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index db8f0de85ccce2120adac341dc92bed1f925499b..05d7d5f3534e23b05d6f9e0dce234eb4b950adf0 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -73,6 +73,7 @@ int32_t converToStr(char *str, int type, void *buf, int32_t bufSize, int32_t *le
 
     case TSDB_DATA_TYPE_BINARY:
     case TSDB_DATA_TYPE_NCHAR:
+    case TSDB_DATA_TYPE_JSON:
       if (bufSize < 0) {
         tscError("invalid buf size");
         return TSDB_CODE_TSC_INVALID_VALUE;
diff --git a/src/query/src/qFilter.c b/src/query/src/qFilter.c
index c7a7ea963d5635c76030d2199ac99a60924d99a7..4b43288d8e16d0fcec7d49ae54abbcee7c262f61 100644
--- a/src/query/src/qFilter.c
+++ b/src/query/src/qFilter.c
@@ -1477,7 +1477,7 @@ int32_t filterTreeToGroup(tExprNode* tree, SFilterInfo *info, SArray* group) {
     return TSDB_CODE_SUCCESS;
   }
 
-  code = filterAddGroupUnitFromNode(info, tree, group);  
+  code = filterAddGroupUnitFromNode(info, tree, group);
 
 
 _return:
@@ -1531,7 +1531,7 @@ void filterDumpInfoToString(SFilterInfo *info, const char *msg, int32_t options)
         if (unit->right.type == FLD_TYPE_VALUE && FILTER_UNIT_OPTR(unit) != TSDB_RELATION_IN) {
           SFilterField *right = FILTER_UNIT_RIGHT_FIELD(info, unit);
           char *data = right->data;
-          if (IS_VAR_DATA_TYPE(type)) {
+          if (IS_VAR_DATA_TYPE(type) || type == TSDB_DATA_TYPE_JSON) {
             tlen = varDataLen(data);
             data += VARSTR_HEADER_SIZE;
           }
@@ -1548,7 +1548,7 @@ void filterDumpInfoToString(SFilterInfo *info, const char *msg, int32_t options)
           if (unit->right2.type == FLD_TYPE_VALUE && FILTER_UNIT_OPTR(unit) != TSDB_RELATION_IN) {
             SFilterField *right = FILTER_UNIT_RIGHT2_FIELD(info, unit);
             char *data = right->data;
-            if (IS_VAR_DATA_TYPE(type)) {
+            if (IS_VAR_DATA_TYPE(type) || type == TSDB_DATA_TYPE_JSON) {
               tlen = varDataLen(data);
               data += VARSTR_HEADER_SIZE;
             }