fix bug

src/client/src/tscUtil.c

@@ -2127,6 +2127,10 @@ SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, __async_cb_func_t
                                      pTableMetaInfo->tagColList, pTableMetaInfo->pVgroupTables);
   } else {  // transfer the ownership of pTableMeta to the newly create sql object.
     STableMetaInfo* pPrevInfo = tscGetTableMetaInfoFromCmd(&pPrevSql->cmd, pPrevSql->cmd.clauseIndex, 0);
+    if (pPrevInfo->pTableMeta && pPrevInfo->pTableMeta->tableType < 0) {
+      terrno = TSDB_CODE_TSC_APP_ERROR;
+      goto _error;
+    }
     
     STableMeta*  pPrevTableMeta = tscTableMetaDup(pPrevInfo->pTableMeta);
     SVgroupsInfo* pVgroupsInfo = pPrevInfo->vgroupList;