select FROM_UNIXTIME(1429063399,'%Y年%m月%d日')
详情可参考:https://www.cnblogs.com/cyfblogs/p/10069404.html
https://www.cnblogs.com/woods1815/p/9780607.html
SELECT FROM_UNIXTIME(1539238971); // 2018/10/11 14:22:51