From fb63307be3605209a6937d6735824cd2a0364f08 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=AB=98=E9=93=81?= <shaojin.wensj@alibaba-inc.com>
Date: Wed, 17 Feb 2016 16:41:29 +0800
Subject: [PATCH] bug fixed for SQLInListExpr, issue 1076

---
 .../java/com/alibaba/druid/sql/ast/expr/SQLInListExpr.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLInListExpr.java b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLInListExpr.java
index c33e653b79..f00f786139 100644
--- a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLInListExpr.java
+++ b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLInListExpr.java
@@ -58,6 +58,10 @@ public class SQLInListExpr extends SQLExprImpl implements Serializable {
     }
 
     public void setExpr(SQLExpr expr) {
+        if (expr != null) {
+            expr.setParent(this);
+        }
+        
         this.expr = expr;
     }