diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 3a0d59b6c278f79b44dc4c4f26595f2b5f31dc2a..e35b6ad15bbdedddd1ed4f1ea35887761e06496f 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1602,6 +1602,7 @@ int32_t validateOneTag(SSqlCmd* pCmd, TAOS_FIELD* pTagField) {
   for (int32_t i = 0; i < numOfTags + numOfCols; ++i) {
     if (strncasecmp(pTagField->name, pSchema[i].name, sizeof(pTagField->name) - 1) == 0) {
       return tscErrorMsgWithCode(TSDB_CODE_TSC_DUP_COL_NAMES, tscGetErrorMsgPayload(pCmd), pTagField->name, NULL);
+//      return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), "duplicated column name");
     }
   }
 
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index ef686fe9553871cbb7cce4bff1ca990b0ad3dcd1..1999cf0346595897e089a751666f4423e7c1d9cc 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -2924,13 +2924,15 @@ int32_t tscGetTableMetaImpl(SSqlObj* pSql, STableMetaInfo *pTableMetaInfo, bool
    // just make runtime happy
   if (pTableMetaInfo->tableMetaCapacity != 0 && pTableMetaInfo->pTableMeta != NULL) {
     memset(pTableMetaInfo->pTableMeta, 0, pTableMetaInfo->tableMetaCapacity);
-  } 
+  }
+
   if (NULL == taosHashGetCloneExt(tscTableMetaMap, name, len, NULL, (void **)&(pTableMetaInfo->pTableMeta), &pTableMetaInfo->tableMetaCapacity)) {
     tfree(pTableMetaInfo->pTableMeta);
   }
   
   STableMeta* pMeta   = pTableMetaInfo->pTableMeta;
   STableMeta* pSTMeta = (STableMeta *)(pSql->pBuf);
+
   if (pMeta && pMeta->id.uid > 0) {
     // in case of child table, here only get the
     if (pMeta->tableType == TSDB_CHILD_TABLE) {
@@ -2940,6 +2942,8 @@ int32_t tscGetTableMetaImpl(SSqlObj* pSql, STableMetaInfo *pTableMetaInfo, bool
         return getTableMetaFromMnode(pSql, pTableMetaInfo, autocreate);
       }
     }
+
+    tscDebug("0x%"PRIx64 " %s retrieve tableMeta from cache, numOfCols:%d, numOfTags:%d", pSql->self, name, pMeta->tableInfo.numOfColumns, pMeta->tableInfo.numOfTags);
     return TSDB_CODE_SUCCESS;
   }