[jira none] fix the time window bug in handling the 1970 time.

src/system/detail/src/vnodeQueryImpl.c

@@ -1529,7 +1529,7 @@ static STimeWindow getActiveTimeWindow(SWindowResInfo *pWindowResInfo, int64_t t
     w.ekey = w.skey + pQuery->intervalTime - 1;
   }
 
-  assert(ts >= w.skey && ts <= w.ekey && w.skey != 0);
+  assert(ts >= w.skey && ts <= w.ekey/* && w.skey != 0*/);
 
   return w;
 }
@@ -1646,7 +1646,7 @@ static void doCheckQueryCompleted(SQueryRuntimeEnv *pRuntimeEnv, TSKEY lastKey,
     setQueryStatus(pQuery, QUERY_COMPLETED | QUERY_RESBUF_FULL);
   } else {  // set the current index to be the last unclosed window
     int32_t i = 0;
-    int64_t skey = 0;
+    int64_t skey = INT64_MIN;
 
     for (i = 0; i < pWindowResInfo->size; ++i) {
       SWindowResult *pResult = &pWindowResInfo->pResult[i];
@@ -1668,7 +1668,7 @@ static void doCheckQueryCompleted(SQueryRuntimeEnv *pRuntimeEnv, TSKEY lastKey,
     }
 
     // all windows are closed, set the last one to be the skey
-    if (skey == 0) {
+    if (skey == INT64_MIN) {
       assert(i == pWindowResInfo->size);
       pWindowResInfo->curIndex = pWindowResInfo->size - 1;
     } else {
@@ -1686,7 +1686,7 @@ static void doCheckQueryCompleted(SQueryRuntimeEnv *pRuntimeEnv, TSKEY lastKey,
     dTrace("QInfo:%p total window:%d, closed:%d", GET_QINFO_ADDR(pQuery), pWindowResInfo->size, n);
   }
 
-  assert(pWindowResInfo->prevSKey != 0);
+  assert(pWindowResInfo->prevSKey != INT64_MIN);
 }
 
 static int32_t getNumOfRowsInTimeWindow(SQuery *pQuery, SBlockInfo *pBlockInfo, TSKEY *pPrimaryColumn, int32_t startPos,