From d7eb965a920680f1926883b18e9350c8fb9bbfd2 Mon Sep 17 00:00:00 2001
From: Andrew Thornton <art27@cantab.net>
Date: Wed, 15 Mar 2023 13:56:37 +0000
Subject: [PATCH] handle weird update n by mysql

Signed-off-by: Andrew Thornton <art27@cantab.net>
---
 session_upsert.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/session_upsert.go b/session_upsert.go
index d37f0b3b..79ec5995 100644
--- a/session_upsert.go
+++ b/session_upsert.go
@@ -145,6 +145,11 @@ func (session *Session) upsertMap(doUpdate bool, columns []string, args []interf
 	if err != nil {
 		return 0, err
 	}
+	if doUpdate && session.engine.dialect.URI().DBType == schemas.MYSQL && affected == 2 {
+		// for MYSQL if INSERT ... ON CONFLICT RowsAffected == 2 means UPDATE
+		affected = 1
+	}
+
 	return affected, nil
 }