From 5197775791b4942cb6cdb543eb1d3812c7219e53 Mon Sep 17 00:00:00 2001
From: Hadley Wickham <h.wickham@gmail.com>
Date: Mon, 4 Mar 2024 07:59:15 -0600
Subject: [PATCH] Simulate is a pure S3 class

---
 R/backend-mysql.R | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/R/backend-mysql.R b/R/backend-mysql.R
index 5a2fccf5d..427c33f19 100644
--- a/R/backend-mysql.R
+++ b/R/backend-mysql.R
@@ -267,7 +267,9 @@ sql_escape_datetime.MySQL <- sql_escape_datetime.MariaDBConnection
 # dbQuoteIdentifier() for RMySQL lacks handling of SQL objects
 #' @export
 sql_escape_ident.MySQLConnection <- function(con, x) {
-  if (methods::is(x, "SQL")) {
+  if (!isS4(con)) { # for simulate_mysql()
+    NextMethod()
+  } else if (methods::is(x, "SQL")) {
     x
   } else {
     DBI::dbQuoteIdentifier(con, x)