WebDec 29, 2024 · The following example displays the day of the week for a date value and shows the effects of changing the DATEFIRST setting. -- SET DATEFIRST to U.S. English default value of 7. SET DATEFIRST 7; SELECT CAST('1999-1-1' AS datetime2) AS SelectDate ,DATEPART(dw, '1999-1-1') AS DayOfWeek; -- January 1, 1999 is a Friday.
How To Get Day Of Week In SQL Server? My Tec Bits
WebJan 18, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. WebJan 1, 2024 · datediff函数用于计算两个日期之间的天数差。 它的语法如下: DATEDIFF(unit, start_date, end_date) 其中,unit是计算时间差的单位,可以是day、week、month、quarter、year等;start_date和end_date是要计算的两个日期。 timestampdiff函数用于计算两个时间戳之间的时间差。 north face micro sleeping bag
日期函数 - 日期部分:DATEPART() - 《有数BI用户手册V8.4》
WebMar 16, 2024 · CASE WHEN DATEPART(ISO_WEEK, @Date) > 50 AND MONTH(@Date) = 1 THEN YEAR(@Date) - 1 WHEN DATEPART(ISO_WEEK, @Date) = 1 AND MONTH(@Date) = 12 THEN YEAR(@Date) + 1 ELSE YEAR(@Date) END Can be used directly inside a SELECT statement. Or you could consider creating a user-defined … For a week (wk, ww) or weekday (dw) datepart, the DATEPART return value depends on the value set by SET DATEFIRST. January 1 of any year defines the starting number for the week datepart. For example: DATEPART (wk, 'Jan 1, xxxx') = 1 where xxxxis any year. This table shows the return value for the week and … See more datepart The specific part of the date argument for which DATEPART will return an integer. This table lists all valid datepartarguments. … See more The values that are returned for DATEPART (year, date), DATEPART (month, date), and DATEPART (day, date) are the same as those returned by the functions YEAR, MONTH, and DAY, respectively. See more Each datepartand its abbreviations return the same value. The return value depends on the language environment set by using SET LANGUAGE, … See more ISO 8601 includes the ISO week-date system, a numbering system for weeks. Each week is associated with the year in which Thursday occurs. For example, week 1 of 2004 (2004W01) covered Monday, 29 … See more WebJul 12, 2024 · Use the DatePart function to evaluate a date and return a specific interval of time. For example, you might use DatePart to calculate the day of the week or the … north face michigan