如何从MySQL中的datetime中减去3个小时？
问题描述：
我收到一个datetime字段，目前在查询中：
I get a datetime field, that's currently in the query as:
SELECT DATE_FORMAT(x.date_entered, '%Y-%m-%d') AS date FROM x ORDER BY date ASC
我想做什么是从该日期（GMT问题）减去3小时，但是我不能在PHP中执行，因为PHP只知道日期部分，而不是时间。
What I want to do is to subtract 3 hours from that date (GMT issues), but I can't do it in PHP as PHP only knows the date part, not the time.
答
mySQL有 DATE_SUB（） ：
mySQL has DATE_SUB():
SELECT DATE_SUB(column, INTERVAL 3 HOUR)....
但是不会更好，整理出潜在的时区问题？
but would it not be better to try and sort out the underlying time zone issue instead?