From ab201625c35e2f2568c8cd727a4707f3b71dfcdc Mon Sep 17 00:00:00 2001
From: zhouzb <zhouzb@emqx.io>
Date: Thu, 21 Oct 2021 17:07:24 +0800
Subject: [PATCH] fix(authn): fix sql parse for mysql

---
 apps/emqx_authn/src/simple_authn/emqx_authn_mysql.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/emqx_authn/src/simple_authn/emqx_authn_mysql.erl b/apps/emqx_authn/src/simple_authn/emqx_authn_mysql.erl
index 9df50cf8f..065e951c5 100644
--- a/apps/emqx_authn/src/simple_authn/emqx_authn_mysql.erl
+++ b/apps/emqx_authn/src/simple_authn/emqx_authn_mysql.erl
@@ -145,7 +145,7 @@ parse_query(Query) ->
     case re:run(Query, ?RE_PLACEHOLDER, [global, {capture, all, binary}]) of
         {match, Captured} ->
             PlaceHolders = [PlaceHolder || [PlaceHolder] <- Captured],
-            NQuery = re:replace(Query, "'\\$\\{[a-z0-9\\_]+\\}'", "?", [global, {return, binary}]),
+            NQuery = re:replace(Query, "'\\$\\{[a-z0-9\\-]+\\}'", "?", [global, {return, binary}]),
             {NQuery, PlaceHolders};
         nomatch ->
             {Query, []}