diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index dbd3f464eaf457b9002bb5cd6af6bfd88e5cfbc1..2d86e7c4e006fe0785826746e17d4865eaf26fe4 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -2010,7 +2010,7 @@ SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, void (*fp)(), void
     }
     
     // create the fields info from the sql functions
-    SColumnList columnList = {.num = 1};
+    SColumnList columnList = {.num = 0};
   
     for(int32_t k = 0; k < numOfOutputCols; ++k) {
       SSqlExpr* pExpr = tscSqlExprGet(pQueryInfo, indexList[k]);
diff --git a/src/sdb/src/sdbEngine.c b/src/sdb/src/sdbEngine.c
index 2bdc64cdecd14f7951f2385a751999a71cd94770..e2bde1eb8b7588691fb1c986eca668bace340728 100644
--- a/src/sdb/src/sdbEngine.c
+++ b/src/sdb/src/sdbEngine.c
@@ -812,11 +812,10 @@ void sdbResetTable(SSdbTable *pTable) {
   SRowHead *rowHead = NULL;
   void *    pMetaRow = NULL;
   int64_t   oldId = pTable->id;
-  //TODO: check
-  //int       oldNumOfRows = pTable->numOfRows;
+  int       oldNumOfRows = pTable->numOfRows;
 
   if (sdbOpenSdbFile(pTable) < 0) return;
-  //pTable->numOfRows = oldNumOfRows;
+  pTable->numOfRows = oldNumOfRows;
 
   total_size = sizeof(SRowHead) + pTable->maxRowSize + sizeof(TSCKSUM);
   rowHead = (SRowHead *)malloc(total_size);