mysql parser support alter table rename

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlAlterTableTest1.java

@@ -0,0 +1,22 @@
+package com.alibaba.druid.bvt.sql.mysql;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.parser.Token;
+
+import junit.framework.Assert;
+import junit.framework.TestCase;
+
+public class MySqlAlterTableTest1 extends TestCase {
+
+    public void test_alter_0() throws Exception {
+        String sql = "ALTER TABLE t1 RENAME t2;";
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        SQLStatement stmt = parser.parseStatementList().get(0);
+        parser.match(Token.EOF);
+        String output = SQLUtils.toMySqlString(stmt);
+        Assert.assertEquals("RENAME TABLE t1 TO t2", output);
+    }
+
+}