From f9947be46f603b323763c815bc445cb33e02146c Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Tue, 19 Apr 2022 18:16:29 +0800
Subject: [PATCH] refactor(query): refactor cast function

TD-14837
TD-14843
TD-14904
---
 source/libs/function/src/builtins.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 5ba0cee53e..4403ff1540 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -32,7 +32,7 @@ static int32_t invaildFuncParaNumErrMsg(char* pErrBuf, int32_t len, const char*
 }
 
 static int32_t invaildFuncParaTypeErrMsg(char* pErrBuf, int32_t len, const char* pFuncName) {
-  return buildFuncErrMsg(pErrBuf, len, TSDB_CODE_FUNC_FUNTION_PARA_TYPE, "Inconsistent datatypes : %s", pFuncName);
+  return buildFuncErrMsg(pErrBuf, len, TSDB_CODE_FUNC_FUNTION_PARA_TYPE, "Invalid datatypes : %s", pFuncName);
 }
 
 static int32_t invaildFuncParaValueErrMsg(char* pErrBuf, int32_t len, const char* pFuncName) {
@@ -327,7 +327,7 @@ static int32_t translateCast(SFunctionNode* pFunc, char* pErrBuf, int32_t len) {
     return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
   }
   int32_t para2Bytes = pFunc->node.resType.bytes;
-  if (para2Bytes < 0) { //negative value or overflow
+  if (para2Bytes <= 0) { //non-positive value or overflow
     return invaildFuncParaValueErrMsg(pErrBuf, len, pFunc->functionName);
   }
   return TSDB_CODE_SUCCESS;