Question

我有下表，其中存储了教师课程例程

表名：batchroutine_regular

batchid class_day   subject    teacherid class_start   class_end
   1     Sunday     English-1    1001     02:00 PM     03:30 PM
   1     Sunday     Geography    1002     04:00 PM     05:30 PM
   2     Monday     Math         1001     10:00 AM     12:30 PM
   2     Tuesday    Geography    1001     01:00 PM     03:30 PM

现在假设您是teacherid为1001的教师。我们要求您在星期一上课，该课程将从11:00 AM开始，到1:00 PM结束。现在我的问题是MYSQL / PHP查询是什么时候从表batchroutine_regular中找出你是否可用？

提前致谢：）

Answer 1

SELECT (COUNT(*) = 0) AS Available
FROM batchroutine_regular
WHERE
      teacherid = 1001
  AND class_day = 'Sunday'
  AND (
       (class_start <= MAKETIME(11,00,00) AND class_end >= MAKETIME(11,00,00))
    OR (class_start <= MAKETIME(13,00,00) AND class_end >= MAKETIME(13,00,00))
  )

Mysql：检查范围时间冲突

1 个答案: