From 74551380f78e6afeb99b58032c70e13d00a768ee Mon Sep 17 00:00:00 2001
From: wangmm0220 <wangmm0220@gmail.com>
Date: Tue, 19 Oct 2021 13:27:05 +0800
Subject: [PATCH] TD-6129<feature> add taos json key hash free function

---
 src/util/src/tutil.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 441ee74e16..4845da626b 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -470,9 +470,9 @@ bool isValidateTag(char *input) {
   if (!input) return false;
   int len = strlen(input);
   if (len == 0) return false;
-  if (input[0] != '_' || isalpha(input[0]) == 0) return false;
+  if (input[0] != '_' && isalpha(input[0]) == 0) return false;
   for (int i = 1; i < len; ++i) {
-    if (input[0] != '_' || isalnum(input[0]) == 0) return false;
+    if (input[i] != '_' && isalnum(input[i]) == 0) return false;
   }
   return true;
 }
-- 
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