MySQL选择时间段

Question

我有一个名为away的表，其中包含以下字段

+---------------+-----------------+---------------+
| Name          |  from           |   to          |
+---------------+-----------------+---------------+
| Lee           |  12-09-11       |   16-09-11    |
|               |                 |               |
| Mike          |  10-10-11       |   12-11-11    |
+---------------+-----------------+---------------+

我需要的是查询一个人是否在某一天离开的查询。例如，Lee将在14-09-11离开，所以我不想返回这一行。

Answer 1

set @away:='2011-09-14';

select name 
from away
where `from`>@away and `to`<@away;
-- to encourage optimization
-- an index should be build on `from` and `to`

其他问题 - 避免在表架构中使用保留关键字，只是错误

Answer 2

SELECT * FROM away WHERE '14-09-11' NOT BETWEEN from AND to