From 5c87184dee7639e692cd65ac5c4104f3cfcdd3e2 Mon Sep 17 00:00:00 2001
From: obdev <obdev@oceanbase.com>
Date: Wed, 30 Aug 2023 02:10:51 +0000
Subject: [PATCH] Check oracle mode negative zero when double_cell_str with
 binary type

---
 deps/oblib/src/rpc/obmysql/ob_mysql_util.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/deps/oblib/src/rpc/obmysql/ob_mysql_util.cpp b/deps/oblib/src/rpc/obmysql/ob_mysql_util.cpp
index 0f4b921e98..7d0fc35186 100644
--- a/deps/oblib/src/rpc/obmysql/ob_mysql_util.cpp
+++ b/deps/oblib/src/rpc/obmysql/ob_mysql_util.cpp
@@ -898,7 +898,8 @@ int ObMySQLUtil::double_cell_str(char *buf, const int64_t len, double val,
     LOG_WARN("invalid input", KP(buf), K(ret));
   } else {
     if (BINARY == type) {
-      if (std::fpclassify(val) == FP_ZERO && std::signbit(val)) {
+      if (lib::is_oracle_mode() && // only oracle mode need convert
+          std::fpclassify(val) == FP_ZERO && std::signbit(val)) {
         val = val * -1; // if -0.0, change to 0.0
       }
       if (len - pos > DBL_SIZE) {