diff --git a/src/test/java/com/alibaba/druid/bvt/sql/postgresql/issues/Issue4442.java b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/issues/Issue4442.java
new file mode 100644
index 0000000000..05859d6fbf
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/issues/Issue4442.java
@@ -0,0 +1,31 @@
+package com.alibaba.druid.bvt.sql.postgresql.issues;
+
+import com.alibaba.druid.DbType;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+import com.alibaba.druid.sql.parser.SQLParserUtils;
+import com.alibaba.druid.sql.parser.SQLStatementParser;
+import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+import org.junit.Test;
+
+import java.util.Map;
+
+import static org.junit.Assert.assertFalse;
+
+public class Issue4442 {
+    @Test
+    public void test_idle2() throws Exception {
+        String sql = "INSERT INTO users (id, level)\n" +
+                "VALUES (1, 0)\n" +
+                "ON CONFLICT (id) DO UPDATE\n" +
+                "SET level = users.level + 1;";
+        SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, DbType.postgresql);
+        SQLStatement statement = parser.parseStatement();
+        SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(DbType.postgresql);
+        statement.accept(visitor);
+        Map<TableStat.Name, TableStat> tableMap = visitor.getTables();
+        assertFalse(tableMap.isEmpty());
+    }
+}