From 55c7770d84024557dbdcf11a7af057421e7f780a Mon Sep 17 00:00:00 2001
From: Shengliang Guan <slguan@taosdata.com>
Date: Tue, 15 Oct 2024 16:11:33 +0800
Subject: [PATCH] fix: param start and every calculation errors

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

diff --git a/source/libs/executor/src/forecastoperator.c b/source/libs/executor/src/forecastoperator.c
index 243330a151..00956c56a3 100644
--- a/source/libs/executor/src/forecastoperator.c
+++ b/source/libs/executor/src/forecastoperator.c
@@ -155,7 +155,7 @@ static int32_t forecastCloseBuf(SForecastSupp* pSupp) {
   if (code != 0) return code;
 
   int32_t len = strlen(pSupp->algoOpt);
-  int64_t every = (pSupp->maxTs - pSupp->minTs) / (pSupp->numOfRows + 1);
+  int64_t every = (pSupp->maxTs - pSupp->minTs) / (pSupp->numOfRows - 1);
   int64_t start = pSupp->maxTs + every;
   bool    hasStart = taosAnalGetOptInt(pSupp->algoOpt, "start", &start);
   if (!hasStart) {