文章表：article

主键            标题
ID                Title

题目：Title相同的记录只显示最新的一条

查询语句：
sql = "select max(ID) from [article] group by Title"
注释：以“Title”分组，查询出组内“ID”最大的记录

sqlStr = "select * from [article] where ID in ("&sql&")"
注释：查询出“ID”在（N，N+1）内的记录

连接起来写法：
sqlStr = "select * from [article] where ID in (select max(ID) from [article] group by Title)"