From 16804ed71175a4a2fdfe57fd02a00f09eeb3bd8d Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Sat, 8 Oct 2022 18:48:49 +0800
Subject: [PATCH] fix(query): fix inconsistent max value caused by data
 conversion when reading from sma.

---
 source/libs/function/src/builtinsimpl.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 42512d3a11..d91423ab5c 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -1251,12 +1251,12 @@ int32_t doMinMaxHelper(SqlFunctionCtx* pCtx, int32_t isMinFunc) {
           }
         }
       } else if (type == TSDB_DATA_TYPE_FLOAT) {
-        double prev = 0;
-        GET_TYPED_DATA(prev, double, type, &pBuf->v);
+        float prev = 0;
+        GET_TYPED_DATA(prev, float, type, &pBuf->v);
 
-        double val = GET_DOUBLE_VAL(tval);
+        float val = GET_DOUBLE_VAL(tval);
         if ((prev < val) ^ isMinFunc) {
-          *(double*)&pBuf->v = val;
+          *(float*)&pBuf->v = val;
         }
 
         if (pCtx->subsidiaries.num > 0) {