测试方法:
先通过createDB, openDB初始化数据库.
执行: create table tresss1(name varchar(10), age smallint);
insert into tresss1 values("jack", 20);
insert into tresss1 values("tresss", 21);
insert into tresss1 values("amina", 22);
insert into tresss1 values("joe", 23);
insert into tresss1 values("kane", 23);
insert into tresss1 values("kris", 23);
select * from tresss1;
select * from tresss1 where name like "k%";