From 16bae3356360f9bd3612af895fc3ba6253b42856 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=AB=98=E9=93=81?= <shaojin.wensj@alibaba-inc.com>
Date: Sun, 18 Apr 2021 17:09:03 +0800
Subject: [PATCH] MySqlKey set parent, fix #4225

---
 .../java/com/alibaba/druid/sql/parser/SQLStatementParser.java    | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java b/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java
index 29f17f4659..1c45f572d6 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java
@@ -3575,6 +3575,7 @@ public class SQLStatementParser extends SQLParser {
                             if (name != null) {
                                 key.setName(name);
                             }
+                            key.setParent(stmt);
                             stmt.getTableElementList().add(key);
                         }
                         continue;