diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 3e0ff479e9..d9c725a4f5 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -3335,7 +3335,7 @@ void setWindowResOutputBufInitCtx(SQueryRuntimeEnv *pRuntimeEnv, SWindowResult *
 
 int32_t setAdditionalInfo(SQInfo *pQInfo, STableId* pTableId, STableQueryInfo *pTableQueryInfo) {
   SQueryRuntimeEnv *pRuntimeEnv = &pQInfo->runtimeEnv;
-  assert(pTableQueryInfo->lastKey >= TSKEY_INITIAL_VAL);
+  //assert(pTableQueryInfo->lastKey >= TSKEY_INITIAL_VAL);
 
   setTagVal(pRuntimeEnv, pTableId, pQInfo->tsdb);
 
@@ -4230,7 +4230,7 @@ static void sequentialTableProcess(SQInfo *pQInfo) {
       SArray* group = taosArrayGetP(pQInfo->groupInfo.pGroupList, pQInfo->groupIndex);
 
       qTrace("QInfo:%p last_row query on group:%d, total group:%d, current group:%d", pQInfo, pQInfo->groupIndex,
-             numOfGroups);
+             numOfGroups, group);
 
       STsdbQueryCond cond = {
           .twindow = pQuery->window,
@@ -4264,10 +4264,10 @@ static void sequentialTableProcess(SQInfo *pQInfo) {
       
       setTagVal(pRuntimeEnv, (STableId*) taosArrayGet(s, 0), pQInfo->tsdb);
         
-      taosArrayDestroy(s);
       if (isFirstLastRowQuery(pQuery)) {
         assert(taosArrayGetSize(s) == 1);
       }
+      taosArrayDestroy(s);
       
       // here we simply set the first table as current table
       pQuery->current = ((SGroupItem*) taosArrayGet(group, 0))->info;
@@ -5380,6 +5380,7 @@ static int32_t createFilterInfo(void *pQInfo, SQuery *pQuery) {
 
         if ((lower == TSDB_RELATION_GREATER_EQUAL || lower == TSDB_RELATION_GREATER) &&
             (upper == TSDB_RELATION_LESS_EQUAL || upper == TSDB_RELATION_LESS)) {
+          assert(rangeFilterArray != NULL);
           if (lower == TSDB_RELATION_GREATER_EQUAL) {
             if (upper == TSDB_RELATION_LESS_EQUAL) {
               pSingleColFilter->fp = rangeFilterArray[4];
@@ -5394,11 +5395,12 @@ static int32_t createFilterInfo(void *pQInfo, SQuery *pQuery) {
             }
           }
         } else {  // set callback filter function
+          assert(filterArray != NULL);
           if (lower != TSDB_RELATION_INVALID) {
             pSingleColFilter->fp = filterArray[lower];
 
             if (upper != TSDB_RELATION_INVALID) {
-              qError("pQInfo:%p failed to get filter function, invalid filter condition", pQInfo, type);
+              qError("pQInfo:%p failed to get filter function, invalid filter condition: %d", pQInfo, type);
               return TSDB_CODE_QRY_INVALID_MSG;
             }
           } else {
diff --git a/src/query/src/tvariant.c b/src/query/src/tvariant.c
index 32d06225c5..7ba4e7899e 100644
--- a/src/query/src/tvariant.c
+++ b/src/query/src/tvariant.c
@@ -887,7 +887,7 @@ int32_t tVariantTypeSetType(tVariant *pVariant, char type) {
         free(pVariant->pz);
         pVariant->dKey = v;
       } else if (pVariant->nType >= TSDB_DATA_TYPE_BOOL && pVariant->nType <= TSDB_DATA_TYPE_BIGINT) {
-        pVariant->dKey = pVariant->i64Key;
+        pVariant->dKey = (double)(pVariant->i64Key);
       }
       
       pVariant->nType = TSDB_DATA_TYPE_DOUBLE;