Query the last Sunday of the week of the given date (Sunday is the first day) SQL statement declare @ date & nbsp; datetimeset @ dategetdate () -- idea: the day of the week where the current log is located minus one week -- datepart (weekday, date)
This week, 1st, returns the result format: 2014-5-5 0:00:00public static DateTime Getmondaydate (){DateTime Dt=datetime.now;int today= (int) dt. DayOfWeek;if (dt. Dayofweek.tostring ()! = "Sunday")//You can also use the today!=0{Return dt. AddDays (1
Function
/*
Every function has only one sentence!
In fact, from another blog I dug out:
T-SQL generates two new true Gregorian calendars
Http://blog.csdn.net/playyuer/archive/2004/04/07/2860.aspx
T-SQL generates a simple Gregorian calendar T-SQL
Queries the previous Sunday (Sunday is first day) SQL statement for the week on which the given date is located
DECLARE @date datetime
Set @date = GETDATE ()
--Train of thought: The current Diary of the Week in Sunday minus 1 weeks
The return
Mondayecho Date (' y-m-d ', (Time ()-((Date (' W ') ==0?7:date (' W ') ')-1) *24*3600)); W is the number form of the day of the week, where 0 is SundayThis Sundayecho Date (' y-m-d ', (Time () + (7-(' W ') ==0?7:date (' W ')) *24*3600)); Also use W
usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespacewyfclass{ Publicclasstools{/// ///get the first day of the week (first day of Sunday)/// /// /// Publicdatetime Getweekfirstdaysun (datetime datetime) {//Sunday
declare _lastweekstarttime date; --Last week start time declare _lastweekendtime date; --Last week end time--because the system is Sunday for the first day of the week so need to reduce 1set @A = Date_add (Curdate (), Interval-1 Day);--figure out
How to calculate the day of the week?Slowtiger published on 2009-11-19 08:42:00How to calculate the day of the week?--Caille (Zeller) formulaWhat is the day of the week in history? What day of the future is the week? With regard to this problem,
/// ///Some extensions of datetime/// Public classDateTime2 {/// ///get the first day of the week (first day of Sunday)/// /// /// Publicdatetime Getweekfirstdaysun (datetime datetime) {//Sunday for the
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