From 334f0911f104b39c292bb201b5e187276aa6918a Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Mon, 20 Dec 2021 16:27:16 +0800
Subject: [PATCH] [TD-12276]<fix>: elapsed nest query: Return a negative
 calculation result

---
 src/query/src/qAggMain.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/query/src/qAggMain.c b/src/query/src/qAggMain.c
index e033650b74..3dc89cb196 100644
--- a/src/query/src/qAggMain.c
+++ b/src/query/src/qAggMain.c
@@ -4870,7 +4870,8 @@ static void elapsedFinalizer(SQLFunctionCtx *pCtx) {
   }
 
   SElapsedInfo *pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
-  *(double *)pCtx->pOutput = (double)pInfo->max - (double)pInfo->min;
+  double result = (double)pInfo->max - (double)pInfo->min;
+  *(double *)pCtx->pOutput = result >= 0 ? result : -result;
   if (pCtx->numOfParams > 0 && pCtx->param[0].i64 > 0) {
     *(double *)pCtx->pOutput = *(double *)pCtx->pOutput / pCtx->param[0].i64;
   }
-- 
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