下面的示例展示了如何传入一个任意日期,计算该日期所在周的第一天: DECLARE@GivenDateDATE='2023-10-10';-- 传入的特定日期DECLARE@FirstDayOfGivenWeekDATE;SET@FirstDayOfGivenWeek=DATEADD(DAY,-DATEPART(WEEKDAY,@GivenDate)+1,@GivenDate);-- 计算该日期所在周的第一天SELECT@GivenDateASGivenDate,@FirstDay...
'2013-12-31')ASWeekName--53SELECTDATENAME(WEEK,'2014-01-01')ASWeekName--1SELECTDATENAME(WEEK,'2014-01-05')ASWeekName--2--Change the DATEFIRST to 1, Monday will be the first day of week.SETDATEFIRST1SELECT@@DATEFIRST--1--After change the ...
Getting the current day is easy because this is achieved from the GETDATE() function but getting the start of the week is a little bit tricky. The user-defined function below accepts a date input and returns the first day of the week for that input date. CREATE FUNCTION [dbo].[ufn_...
また、この関数では、NQSConfig.INIファイルでFIRST_DAY_OF_THE_WEEKパラメータを使用して構成される方法も考慮されます。たとえば、週の開始を日曜日とすると、2000-07-06(木曜日)と2000-07-10(次の月曜日)の週の差は1週間となります。しかし、週の開始を火曜日とすると、間隔の小数部が同じ週...
Option 2: Monday as the First Day of the Week Now, let's take a look at an expression that returns Monday as the first day of the week: SELECT DATEADD(week, DATEDIFF(week, 0, RegistrationDate - 1), 0) AS Monday; In the expression above, we add the specified number of weeks to...
In SQL Server 2012 and lateryou can use EOMONTH Function to Get First and Last Day of a Month in SQL Server: Here is an example how you can get thelast day of the month you specify, using EOMONTH function: DECLARE @Date1 datetime ...
The first method we will discuss is extracting the day of the week using Legacy SQL. For this, we will use the dayofweek() function. This function takes a timestamp data type as the argument and returns the day of the week. The return value is an integer type ranging from 1 to 7: ...
weekday 函式 validate_utf8 函式 variant_explode 函式 variant_explode_outer 函式 variant_get 函式 vector_search 函式 weekofyear 函式 width_bucket 函式 視窗函式 window_time 函式 xpath 函式 xpath_boolean 函式 xpath_double 函式 xpath_float 函式 xpath_int 函式 xpath_long 函式 xpath_number...
SELECTWEEK(day_m,1)ASwk,WEEKDAY(day_m)ASwkday,DAY(day_m)ASday_index,day_mASfull_dayFROM(SELECTDATE_ADD(first_day,INTERVALid-1DAY)ASday_mFROM(SELECTDATE_ADD(@someday,INTERVAL-DAY(@someday)+1DAY)ASfirst_day)a,t_seq tWHEREt.id<=DAY(LAST_DAY(@someday)) ...
Day of week (1-7). DAY Yes Name of day, padded with blanks to length of 9 characters. DD Yes Day of month (1-31). DDD Yes Day of year (1-366). DY Yes Abbreviated name of day. E No Abbreviated era name (Japanese Imperial, ROC Official, and Thai Buddha calendars). ...