本文转自:https://stackoverflow.com/questions/18276768/mysql-from-unixtime-as-utc You would be better off setting the time zone ahead of time: SET time_zone='UTC'; select FROM_UNIXTIME(1277942400); SELECT CONVERT_TZ(FROM_UNIXTIME(1277942400), @@session.ti
查找所有重复标题的记录: SELECT * FROM t_info a WHERE ((SELECT COUNT(*) FROM t_info WHERE Title = a.Title) > 1) ORDER BY Title DESC 一.查找重复记录 1.查找全部重复记录 Select * From 表 Where 重复字段 In (Select 重复字段 From 表 Group By 重复字段 Having Count(*)>1) 2.过滤重复记录(只显示一条) Select * F
show databases; 展示可以用的数据库: use employees; 进入数据库: show tables; 展示可用的列表. show columns from employees; 展示表的列. select distinct last_name from employees order by last_name limit 15; 检索名字 按升序
地址:http://www.epochconverter.com/ How to get the current epoch time in ... PHP time() more ... Python import time; time.time() Ruby Time.now (or Time.new). To display the epoch: Time.now.to_i Perl time more ... Java long epoch = System.currentTimeMil