From f5f6306277827f120d596d658c536b8c86f6db1c Mon Sep 17 00:00:00 2001
From: wangjiaming0909 <604227650@qq.com>
Date: Tue, 5 Mar 2024 14:34:01 +0800
Subject: [PATCH] fix split window bug

---
 source/libs/planner/src/planOptimizer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/libs/planner/src/planOptimizer.c b/source/libs/planner/src/planOptimizer.c
index 5e09927b10..6b3acf4726 100644
--- a/source/libs/planner/src/planOptimizer.c
+++ b/source/libs/planner/src/planOptimizer.c
@@ -6042,7 +6042,7 @@ static void tsmaOptSplitWindows(STSMAOptCtx* pTsmaOptCtx, const STimeWindow* pSc
   }
 
   // add head tsma if possible
-  if (!isSkeyAlignedWithTsma) {
+  if (!isSkeyAlignedWithTsma && scanRange.ekey >= endOfSkeyFirstWin - 1) {
     scanRange.ekey = TMIN(
         scanRange.ekey,
         taosTimeAdd(startOfSkeyFirstWin, pInterval->interval * 1, pInterval->intervalUnit, pTsmaOptCtx->precision) - 1);