数据库杂乱笔记

mysql  时间戳查询 
date_format(from_unixtime(order_addtime),"%Y-%m-%d") 

 
// insert into test values (null,UNIX_TIMESTAMP('2011-05-31 23:59:59.144'));   //存入unix时间戳
// date_format(from_unixtime(order_addtime),"%Y-%m-%d") 

// select date_format(from_unixtime(time),"%Y-%m-%d %H:%i:%s.%u")  from test  // 按照指定的格式取出=数据
// select from_unixtime(time) from test