From 5a3f6b11e7993f3af9747855d408323149a1c2da Mon Sep 17 00:00:00 2001
From: slzhou <slzhou@taosdata.com>
Date: Thu, 19 May 2022 17:48:34 +0800
Subject: [PATCH] fix: set hasResult when old state has result

---
 source/libs/function/test/udf2.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/source/libs/function/test/udf2.c b/source/libs/function/test/udf2.c
index 6410af2a4b..101595e866 100644
--- a/source/libs/function/test/udf2.c
+++ b/source/libs/function/test/udf2.c
@@ -64,7 +64,11 @@ int32_t udf2(SUdfDataBlock* block, SUdfInterBuf *interBuf, SUdfInterBuf *newInte
     *(double*)(newInterBuf->buf) = sumSquares;
     newInterBuf->bufLen = sizeof(double);
   }
-  newInterBuf->numOfResult = numOutput;
+  if (interBuf->numOfResult == 0 && numOutput == 0) {
+    newInterBuf->numOfResult = 0;
+  } else {
+    newInterBuf->numOfResult = 1;
+  }
   return 0;
 }