Add sql from how long ago now time conditions

UNIX_TIMESTAMP(NOW())-UNIX_TIMESTAMP(add_time)<=25200

Wherein now () is the current time is other time points add_time 25200: seconds, a difference between now and 7 hours add_time

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Other methods to add time conditions:

Original https://blog.csdn.net/weixin_37632678/article/details/80252364

A: Query time sql server database method 
sql server to provide such functions to our inquiry

select * from student where YEAR(comeyear)=2015
select * from student where month(comeyear)=9
select * from student where day(comeyear)=1
select * from student where datepart(hh,comeyear)=9
select * from student where datepart(mi,comeyear)=9
select * from student where datepart(ss,comeyear)=56

二：mysql的查询

public class QueryRo { private String beginTime; private String endTime; public String getBeginTime() { return beginTime; } public void setBeginTime(String beginTime) { this.beginTime = beginTime; } public String getEndTime() { return endTime; } public void setEndTime(String endTime) { this.endTime = endTime; }}

Query the sql statement period in the project (time is datetime or date) (time type database):

<if test="beginTime!=null and beginTime!=''"> <![CDATA[ and DATE_FORMAT(tr.add_time, '%Y-%m-%d')>= DATE_FORMAT(#{beginTime}, '%Y-%m-%d') ]]> </if> <if test="endTime!=null and endTime!=''"> <![CDATA[ and DATE_FORMAT(tr.add_time, '%Y-%m-%d') <= DATE_FORMAT(#{endTime}, '%Y-%m-%d') ]]> </if>

Query the sql statement period in the project (time of type VARCHAR) (time type database):

<if test="beginTime!=null and beginTime!=''"> 　　AND tm.add_time&gt;=#{beginTime} </if> <if test="endTime!=null and endTime!=''"> 　　AND tm.add_time &lt;=#{endTime} </if>

& Lt; number of less than <& gt; Greater than>

Attachment:

MySQL DATE_FORMAT () function

Definition and Usage

The DATE_FORMAT () function is used to display the date / time data in different formats.

grammar

DATE_FORMAT(date,format)

date parameter is legitimate date. format predetermined output format of the date / time.

Format that can be used are:

format	description
%a	Abbreviated weekday name
%b	Abbreviated month name
%c	Month, the value
%D	Mid-day with the English prefix
%d	Day of the month, the value (00-31)
%e	Day of the month, the value (0-31)
%f	Microsecond
%H	Hour (00-23)
%h	Hour (01-12)
%I	Hour (01-12)
%i	Min, value (00-59)
%j	On the day (001-366)
%k	Hour (0-23)
%l	Hour (1-12)
%M	Month name
%m	Month, numeric (00-12)
%p	AM or PM
%r	Time, 12 hours (hh: mm: ss AM or PM)
%S	Sec (00-59)
%s	Sec (00-59)
%T	Time, 24 hours (hh: mm: ss)
% U	Week (00-53) Sunday is the first day of the week
in%	Week (00-53) Monday is the first day of the week
% V	Week (01-53) Sunday is the first day of the week, and use% X
% v	Week (01-53) Monday is the first day of the week, with the use of% x
%W	Weekday name
%w	Day of the week (0 = Sunday, 6 = Saturday)
%X	In, where Sunday is the first day of the week, four, and use% V
%x	In which the first day of the week is Monday, 4, use% v
%Y	Year 4
%Y	Year 2

Examples

The following script uses the DATE_FORMAT () function to display different formats. We use the NOW () to get the current date / time:

DATE_FORMAT(NOW(),'%b %d %Y %h:%i %p')
DATE_FORMAT(NOW(),'%m-%d-%Y')
DATE_FORMAT(NOW(),'%d %b %y')
DATE_FORMAT(NOW(),'%d %b %Y %T:%f')

Add sql from how long ago now time conditions

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