From 0dde9cc9f95c9d6aebabc8a3b4b2feb2be12ffc3 Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Tue, 14 Jun 2022 11:25:11 +0800
Subject: [PATCH] fix bugs

---
 source/libs/function/src/builtinsimpl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index fe52e9c7c5..b5009b7d41 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -2390,6 +2390,7 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
         memcpy(pInfo->buf, data, bytes);
         *(TSKEY*)(pInfo->buf + bytes) = cts;
         //        DO_UPDATE_TAG_COLUMNS(pCtx, ts);
+        pInfo->hasResult = true;
         pResInfo->numOfRes = 1;
       }
       break;
@@ -2407,6 +2408,7 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
       if (pResInfo->numOfRes == 0 || *(TSKEY*)(pInfo->buf + bytes) < cts) {
         memcpy(pInfo->buf, data, bytes);
         *(TSKEY*)(pInfo->buf + bytes) = cts;
+        pInfo->hasResult = true;
         pResInfo->numOfRes = 1;
         //        DO_UPDATE_TAG_COLUMNS(pCtx, ts);
       }
-- 
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