1、ibatis根据时间查询
SELECT
字段
FROM
WHERE 1=1
<dynamic>
<isNotEmpty property="keyWord" prepend="and">
(p1.problem_code like concat('%',#keyWord#,'%') or p1.problem_title like concat('%',#keyWord#,'%'))
</isNotEmpty>
<isNotEmpty prepend="and" property="askTimeMin">
<![CDATA[DATE_FORMAT(ask_time, '%Y-%m-%d') >= ]]>DATE_FORMAT(#askTimeMin#, '%Y-%m-%d')
</isNotEmpty>
<isNotEmpty prepend="and" property="askTimeMax">
<![CDATA[DATE_FORMAT(ask_time, '%Y-%m-%d') <= ]]>DATE_FORMAT(#askTimeMax#, '%Y-%m-%d')
</isNotEmpty>
</dynamic>
order by ask_time desc limit #startRow#,#pageSize#
</select>
2、查询时间段
2.1、查询分钟相差半小时:
SELECT
*, TIMESTAMPDIFF(MINUTE, createtime, NOW())
FROM
test
WHERE
TIMESTAMPDIFF(MINUTE, createtime, NOW()) > 30
TIMESTAMPDIFF(MINUTE, createtime, NOW()),用now()-createtime的时间相差数为分钟相差数。
2.2、<!-查相差的天数->
SELECT
*, TIMESTAMPDIFF(DAY, createtime, NOW())
FROM
test
WHERE
TIMESTAMPDIFF(DAY, createtime, NOW()) > 0.1
2.3、今天的所有数据:select * from 表名 where DateDiff(dd,datetime类型字段,getdate())=0
2.4、昨天的所有数据:select * from 表名 where DateDiff(dd,datetime类型字段,getdate())=1
2.5、7天内的所有数据:select * from 表名 where DateDiff(dd,datetime类型字段,getdate())<=7
2.6、30天内的所有数据:select * from 表名 where DateDiff(dd,datetime类型字段,getdate())<=30
2.7、本月的所有数据:select * from 表名 where DateDiff(mm,datetime类型字段,getdate())=0
2.8、本年的所有数据:select * from 表名 where DateDiff(yy,datetime类型字段,getdate())=0
3、查询时间
3.1、查询今天是今年的第几天: select datepart(dayofyear,getDate())
3.2查询今天是本月的第几天:
1. select datepart(dd, getDate())
2.select day(getDate())
3.3查询本周的星期一日期是多少 (注意:指定日期不能是周日,如果是周日会计算到下周一去。所以如果是周日要减一天)
SELECT DATEADD(wk,DATEDIFF(wk,0,getdate()),0)
3.4、查询昨天日期:select convert(char,dateadd(DD,-1,getdate()),111) //111是样式号,(100-114)
3.5、查询本月第一天日期:Select DATEADD(mm, DATEDIFF(mm,0,getdate()), 0) as firstday
3.6查询本月最后一天日期:Select dateadd(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+1, 0)) as lastday //修改-3的值会有相应的变化
3.7本月有多少天:
select datepart(dd,dateadd(dd,-1,dateadd(mm,1,cast((cast(year(getdate()) as varchar)+'-'+cast(month(getdate()) as varchar)+'-01' ) as datetime ))))
3.8、求两个时间段相差几天:select datediff(day,'2012/8/1','2012/8/20') as daysum
3.9、在指定的日期上±N天:select convert(char,dateadd(dd,1,'2012/8/20'),111) as riqi //输出2012/8/21
3.10、在指定的日期上±N分钟:select dateadd(mi,-15,getdate()) //查询当前时间15分钟之前的日期