从UNIX_TIMESTAMP减去一周

Question

我有一个问题:

SELECT * FROM msc_calendar WHERE calendar_userId = 1 AND end < UNIX_TIMESTAMP() 

有没有办法从时间戳中减去一周,即查看是否end超过一周前？

Answer 1

@ EugenRieck的解决方案将打破边缘情况,例如有夏令时切换的周.最好使用内置函数,DATE_SUB:

SELECT * FROM msc_calendar WHERE calendar_userId = 1 AND 'end' < UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 1 WEEK))

Answer 2

SELECT * FROM msc_calendar WHERE calendar_userId = 1 AND 'end' < UNIX_TIMESTAMP()-7*24*60*60