diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 491857a9790e1673e031926be18cfccf04e15492..e39d7c42074a86c73eef62a1c5ec8b60b2ee902c 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -5478,9 +5478,8 @@ int parseJsontoTagData(char* json, SKVRowBuilder* kvRowBuilder, char* errMsg, in
 
     // json key encode by binary
     char tagKey[TSDB_MAX_JSON_KEY_LEN + VARSTR_HEADER_SIZE] = {0};
-    int32_t outLen = 0;
     strncpy(varDataVal(tagKey), jsonKey, strlen(jsonKey));
-    outLen = strlen(jsonKey);
+    int32_t outLen = (int32_t)strlen(jsonKey);
     taosHashPut(keyHash, jsonKey, outLen, &outLen, CHAR_BYTES);  // add key to hash to remove dumplicate, value is useless
 
     varDataSetLen(tagKey, outLen);
@@ -5510,9 +5509,9 @@ int parseJsontoTagData(char* json, SKVRowBuilder* kvRowBuilder, char* errMsg, in
       tdAddColToKVRow(kvRowBuilder, jsonIndex++, TSDB_DATA_TYPE_BIGINT, tagVal, true);
     }else if(item->type == cJSON_True || item->type == cJSON_False){
       char tagVal[CHAR_BYTES + CHAR_BYTES] = {0};
-      *tagVal = jsonType2DbType(item->valueint, item->type);    // type
+      *tagVal = jsonType2DbType((double)(item->valueint), item->type);    // type
       char* tagData = POINTER_SHIFT(tagVal,CHAR_BYTES);
-      *tagData = item->valueint;
+      *tagData = (char)(item->valueint);
       tdAddColToKVRow(kvRowBuilder, jsonIndex++, TSDB_DATA_TYPE_BOOL, tagVal, true);
     }else if(item->type == cJSON_NULL){
       char tagVal[CHAR_BYTES + VARSTR_HEADER_SIZE + INT_BYTES] = {0};
diff --git a/src/util/src/tcompare.c b/src/util/src/tcompare.c
index a0499b52418b3a59c3109ea3f2d79332c2dc6f3f..1cfc0c3873a438699c342a7dd4a4b1a8efd32878 100644
--- a/src/util/src/tcompare.c
+++ b/src/util/src/tcompare.c
@@ -244,8 +244,9 @@ int32_t compareJsonVal(const void *pLeft, const void *pRight) {
   }else if(type == TSDB_DATA_TYPE_BINARY) { //json null
     return 0;
   }else{
-      assert(0);
+    assert(0);
   }
+  return 0;
 }
 
 /*