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mysqljava数据库 1 select * from
2 select * from
3 select * from
4 select * from
5 select * from
6 select * from
当前有张news表 有字段 addtime ,name ,
查询当前时间起,24小时前的数据,时间不知怎么写。
回复内容:
1查询今天的信息记录:
1 select * from article
where to_days(add_time
) = to_days(now());
2查询昨天的信息记录:
2 select * from article
where to_days(now()) – to_days(add_time
) <= 1;
3 查询近7天的信息记录:
3 select * from article
where date_sub(curdate(), INTERVAL 7 DAY) <= date(add_time
);
4 查询近30天的信息记录:
4 select * from article
where date_sub(curdate(), INTERVAL 30 DAY) <= date(add_time
);
5查询本月的信息记录:
5 select * from article
where date_format(add_time
, ‘%Y%m') = date_format(curdate() , ‘%Y%m');
6 查询上一月的信息记录:
6 select * from article
where period_diff(date_format(now() , ‘%Y%m') , date_format(add_time
, ‘%Y%m')) =1;
select * from news where datediff(year,addtime,getdate()) <= 1
或者select * from news where addtime> sysdate-1
不需要考虑这个addtime的日期类型吗?
思路是把sysdate-addtime>1,当然,前提是日期格式相同