用于检查房间的mysql是否存在具有持续时间的特定日期

Question

我有特定日期的两次检查室.

我尝试跟随两个查询它运行一些时间权限但是,当我选择上午10:00到下午12:00时错误结果意味着不返回任何记录.

QUERY-1:

SELECT 1 FROM `timetable_details` WHERE (
        ((`td_from` <= '10:00:00') AND (`td_to` > '10:00:00')) 
        OR 
        ((`td_from` < '12:20:00') AND (`td_to` >= '12:20:00'))

    ) AND ((`td_room`='1') AND (`td_date`='2016-01-25'))

QUERY-2:

SELECT 1 FROM `timetable_details` WHERE (
            (`td_from` > '07:00:00') AND (`td_to` < '08:00:00')
      ) AND ((`td_room`='1') AND (`td_date`='2016-01-25'))

我有td_id = 4数字行但不是退货.

提前致谢.

Answer 1

您可以将betweenwithOR condition用于两列，如下所示：

SELECT 1 FROM `timetable_details` WHERE (((((`td_from` BETWEEN '10:00:00' AND '12:30:00') OR (`td_to` BETWEEN '10:00:00' AND '12:30:00')) AND ((`td_room`='1') AND (`td_date`='2016-01-25') AND (`td_status` IS NULL))) AND (`td_from` <> '12:30:00')) AND (`td_to` <> '10:00:00'))