From bdf9e0f1dbd0525e3f65c3719c16a625d252030f Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Thu, 7 Jan 2021 11:15:09 +0800
Subject: [PATCH] [TD-2654]<fix>: avoid to generate invalid time range in
 interval query.

---
 src/query/src/qExecutor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 4966aee6be..c75504abec 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -548,7 +548,7 @@ static STimeWindow getActiveTimeWindow(SResultRowInfo *pWindowResInfo, int64_t t
  if (pWindowResInfo->curIndex == -1) {  // the first window, from the previous stored value
     w.skey = pWindowResInfo->prevSKey;
     if (pQuery->interval.intervalUnit == 'n' || pQuery->interval.intervalUnit == 'y') {
-      w.ekey = taosTimeAdd(w.skey, pQuery->interval.interval, pQuery->interval.intervalUnit, pQuery->precision);
+      w.ekey = taosTimeAdd(w.skey, pQuery->interval.interval, pQuery->interval.intervalUnit, pQuery->precision) - 1;
     } else {
       w.ekey = w.skey + pQuery->interval.interval - 1;
     }
-- 
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