improve sql-wall

src/test/java/com/alibaba/druid/bvt/filter/wall/MySqlWallPermitTableTest.java

@@ -25,7 +25,7 @@ import com.alibaba.druid.wall.WallUtils;
 public class MySqlWallPermitTableTest extends TestCase {
 
     public void test_default() throws Exception {
-        Assert.assertFalse(WallUtils.isValidateMySql("select benchmark( 500000, sha1( 'test' ) ) FROM X"));
+        Assert.assertFalse(WallUtils.isValidateMySql("select * from t union select benchmark( 500000, sha1( 'test' ) ) FROM X"));
     }
     
     public void test_allow() throws Exception {

src/test/java/com/alibaba/druid/bvt/filter/wall/OracleWallPermitFunctionTest.java

@@ -30,7 +30,7 @@ import com.alibaba.druid.wall.WallUtils;
 public class OracleWallPermitFunctionTest extends TestCase {
 
     public void test_permitTable() throws Exception {
-        Assert.assertFalse(WallUtils.isValidateOracle("select SYS_CONTEXT ('USERENV', 'CURRENT_USER') from X"));
+        Assert.assertFalse(WallUtils.isValidateOracle("select * from t union select SYS_CONTEXT ('USERENV', 'CURRENT_USER') from X"));
     }
     
     public void test_permitTable_allow() throws Exception {

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_3.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.mysql;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.visitor.ParameterizedOutputVisitorUtils;
+import com.alibaba.druid.util.JdbcConstants;
+
+public class MySqlParameterizedOutputVisitorTest_3 extends TestCase {
+    protected void setUp() throws Exception {
+        System.setProperty("druid.parameterized.shardingSupport", "false");
+    }
+    
+    protected void tearDown() throws Exception {
+        System.clearProperty("druid.parameterized.shardingSupport");
+    }
+
+    public void test_0() throws Exception {
+        String sql = "delete from alerts where not (exists (select metric1_.id from metrics metric1_ where id=alerts.metric_id))";
+        Assert.assertSame(ParameterizedOutputVisitorUtils.parameterize(sql, JdbcConstants.MYSQL), sql);
+    }
+
+    
+}