一个Delphi条件查询例子，按年份检索统计或查询数据库的内容，并在下边的网格控件中显示符合条件的查询。测试所有的数据库在Database目录中，若测试请事前附加和设置好数据库。

-A Delphi criteria query example, by year statistics or content query the database to retrieve and display query matches in the lower grid control. Test all databases in the Database directory, if additional tests requested in advance and set up the database.