From c2fb03996518276c4e74c0459bc483f8f4c20027 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Sun, 4 Dec 2016 16:18:08 +0800
Subject: [PATCH] bug fixed for schema stat visitor.

---
 .../java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java b/src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java
index 066eb441b9..f89375616a 100644
--- a/src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java
+++ b/src/main/java/com/alibaba/druid/sql/visitor/SchemaStatVisitor.java
@@ -52,6 +52,8 @@ import com.alibaba.druid.sql.ast.expr.SQLMethodInvokeExpr;
 import com.alibaba.druid.sql.ast.expr.SQLPropertyExpr;
 import com.alibaba.druid.sql.ast.expr.SQLSequenceExpr;
 import com.alibaba.druid.sql.ast.statement.*;
+import com.alibaba.druid.sql.dialect.mysql.ast.expr.MySqlExpr;
+import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleExpr;
 import com.alibaba.druid.stat.TableStat;
 import com.alibaba.druid.stat.TableStat.Column;
 import com.alibaba.druid.stat.TableStat.Condition;
@@ -312,6 +314,8 @@ public class SchemaStatVisitor extends SQLASTVisitorAdapter {
                         SQLSelectItem selectItem = query.getSelectList().get(intValue);
                         selectItem.getExpr().accept(orderByVisitor);
                     }
+                } else if (expr instanceof MySqlExpr || expr instanceof OracleExpr) {
+                    continue;
                 }
             }
         }