public void test_0() throws Exception {
String sql = "drop index index_name on table_name ";
MySqlStatementParser parser = new MySqlStatementParser(sql);
List<SQLStatement> statementList = parser.parseStatementList();
SQLDropIndexStatement stmt = (SQLDropIndexStatement) statementList.get(0);
print(statementList);
Assert.assertEquals(1, statementList.size());
MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
stmt.accept(visitor);
System.out.println("Tables : " + visitor.getTables());
System.out.println("fields : " + visitor.getColumns());
System.out.println("coditions : " + visitor.getConditions());
System.out.println("orderBy : " + visitor.getOrderByColumns());