improve sql parser

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlParameterizedOutputVisitorTest_5.java

@@ -0,0 +1,46 @@
+/*
+ * 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_5 extends TestCase {
+
+    public void test_0() throws Exception {
+        String sql = "ALTER TABLE `action_plans` ADD `kee` varchar(100)";
+        Assert.assertSame(ParameterizedOutputVisitorUtils.parameterize(sql, JdbcConstants.MYSQL), sql);
+    }
+
+    public void test_1() throws Exception {
+        String sql = "CREATE TABLE `snapshot_data` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `snapshot_id` integer, `resource_id` integer, `snapshot_data` mediumtext, `data_type` varchar(50), `created_at` datetime, `updated_at` datetime) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin";
+        Assert.assertSame(ParameterizedOutputVisitorUtils.parameterize(sql, JdbcConstants.MYSQL), sql);
+    }
+
+    public void test_2() throws Exception {
+        String sql = "ALTER TABLE `active_rule_changes` ADD `username` varchar(200)";
+        Assert.assertSame(ParameterizedOutputVisitorUtils.parameterize(sql, JdbcConstants.MYSQL), sql);
+    }
+
+    public void test_3() throws Exception {
+        String sql = "CREATE TABLE `issue_changes` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `kee` varchar(50), `issue_key` varchar(50) NOT NULL, `user_login` varchar(40), `change_type` varchar(20), `change_data` mediumtext, `created_at` datetime, `updated_at` datetime) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin";
+        Assert.assertSame(ParameterizedOutputVisitorUtils.parameterize(sql, JdbcConstants.MYSQL), sql);
+    }
+}