From d97cea7ac33a61d59269ac8f2973e55b5c1ae638 Mon Sep 17 00:00:00 2001
From: Morgan Tocker <tocker@gmail.com>
Date: Mon, 15 Oct 2018 22:43:59 -0400
Subject: [PATCH] Add XML functions to incompatible (#668)

---
 sql/mysql-compatibility.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sql/mysql-compatibility.md b/sql/mysql-compatibility.md
index f878307912329..3b9732a316026 100644
--- a/sql/mysql-compatibility.md
+++ b/sql/mysql-compatibility.md
@@ -27,6 +27,7 @@ However, in TiDB, the following MySQL features are not supported for the time be
 + Drop primary key
 + SYS schema
 + Optimizer trace
++ XML Functions
 + X-Protocol
 
 ## Features that are different from MySQL