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,
--Caille (Zeller) formulaWhat is the day of the week in history? What day of the future is the week? With regard to this problem, there are many computational formulae (two general formulas and some piecewise formulas), the most notable of which is
Select GETDATE() as 'Current Date', Datename( Year,GetDate()) as 'years', Datename(Month,GetDate()) as 'Month', Datename( Day,GetDate()) as 'Day', Datename(DW,GetDate()) as 'Week', Datename(Week,GetDate()) as 'Week number',
Transferred from: http://www.cnblogs.com/likwo/archive/2010/04/16/1713282.htmlQuery Day:SELECT * FROM table where to_days (column_time) = To_days (now ());SELECT * FROM table where date (column_time) = Curdate ();Query one week:SELECT * FROM table
1 ORACLE mid-week related knowledge description 1.1 Date formatting functions To_char (X [,FORMAT]) : Press X toFORMATThe format is converted into a string. X is a date,FORMATis a format string that specifies the format in which X is
Query Day:Select * from Table where = To_days (now ()); Select * from Table where =Query one week:Select * from Table where 7 Day Date (column_time);Query one months:Select * from Table where 1 MONTH Date (column_time);MySQL date and time
Def juge (Num, week_list): W = input ('enter the % s letter' % num) W = W. lower () RES = [] State = 0 for week in week_list: If W = week [0 + num-1: 1 + num-1]: State + = 1 res. append (week) If State = 1: Print ('% s' % res [0]) Elif State> 1:
The date () function gets the dates,
The time () function gets the times.The now () function can get the current date plus time.
Now () gets the current system date and time, the ASP output can be written like this: Years (now ()) Gets the year, ASP
SELECT * FROM table WHERE convert (Nvarchar, DateAndTime, 111) = CONVERT (Nvarchar, GETDATE (), 111) ORDER by DateAndTime DESCRecord of the Month
SELECT * FROM table WHERE DateDiff (Month,[dateadd],getdate ()) =0
Week
To create a table:The code is as follows:CREATE table if not exists t(ID int,Addtime datetime default ' 0000-00-00 00:00:00′)Add two initial data:Insert T VALUES (1, ' 2012-07-12 21:00:00′);Insert T VALUES (2, ' 2012-07-22 21:00:00′);Data inserted
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