subtract time from time

SelectTimediff ('23:40:00','18:30:00'); --subtract two time select substring (Timediff ('23:40:00','18:30:00'),1,5) ----“ to：Ten"Subtract back hours: minutesSelectDateDiff'2008-08-08','2008-08-01'); --7-----Two date subtractionSelectTo_days ('2008-09

From:http://soft.doit.com.cn/article/2012/0105/2850851.shtml --Addition --plus 1 yearsSELECT sysdate,add_months (sysdate,12) from DUAL;--Add JanuarySELECT sysdate,add_months (sysdate,1) from DUAL;--plus 1 weeksSELECT Sysdate,to_char (sysdate+7, '

This is a creation in Article, where the information may have evolved or changed. 1. Preface Time includes time values and time zones, and there are incomplete and ambiguous times when you do not include timezone information. When transmitting or

Date D=new date ();SimpleDateFormat df=new SimpleDateFormat ("Yyyy-mm-dd");System.out.println ("Today's Date:" +df.format (d));System.out.println ("Two days ago Date:" + Df.format (new Date (D.gettime ()-(LONG) 2 * 24 * 60 * 60 *

Add and subtract functions for SQL Server Date: DATEDIFF DATEADDDATEDIFF: Returns the number of date boundaries and time boundaries across two specified dates, syntax: DATEDIFF (datepart, StartDate, enddate) minus EndDate with StartDateNote:

Mysql sets two date formats to subtract. mysql sets two date formats to Subtract: Original data table data: Select (atime-btime) sec from data table; The subtraction result is not a second. pay special attention to it! Result: To

Original address: http://blog.csdn.net/xyzqiang/article/details/6577831Add and subtract functions for SQL Server Date: DATEDIFF DATEADDDATEDIFF: Returns the number of date boundaries and time boundaries across two specified dates, syntax: DATEDIFF

Http://blog.csdn.net/bokee/article/details/5330791 Http://blog.csdn.net/bokee/article/details/5330682   Problems frequently encountered in actual projects during time processing. Here we will introduce the most common time processing

To perform time operations in SQL, You need to master four time functions: dateadd, datediff, datepart, and datename.Dateadd is to add or subtract a time on a specified date.For example, if you add a 3-day select dateadd (day, 3, '2017-05-06 ') on

To operate on time in SQL, You need to master four time functions:Dateadd, datediff, datepart, datename. Dateadd is to add or subtract a time on a specified date.For example, if you add a 3-day select dateadd (day, 3, '2017-05-06 ') on the