datediff year

Generally, you need to obtain the current date and calculate some other dates. For example, your program may need to determine the first or last day of a month. Most of you probably know how to divide a date (year, month, day, and so on ), then,

Let's review the DateDiff and DATEADD functions first. The DateDiff function calculates the total number of hours, days, weeks, months, and years of time between two dates. The DateAdd function calculates a date by adding and reducing time intervals

Example of how to use DATEADD and DATEDIFF in SQL, dateadddatediff Generally, you need to obtain the current date and calculate some other dates. For example, your program may need to determine the first or last day of a month. Most of you probably

-- Added the weekly times of the month and year of the date!-- Sunday is counted as "last week "! (Note the differences between weekofyear, weekofmonth, myweekofyear, and myweekofmonth)-- Note that the datename value varies depending on the SQL

T-SQL time operations (dateadd, datediff, datepart, datename), datepartdatename -- 1. current System Date and Time select getdate () -- 09:27:27. 277--2. the Time Operation dateadd returns the new datetime value dateadd (datepart, number, date)

Tag:sql    database     --1. Current system date, time select GETDATE ()--2015-01-06 09:27:27.277--2. The time operation DateAdd returns a new datetime value DATEADD (datepart, on the basis of adding a period of time to a specified date)

SQL Server date addition and subtraction functions DATEDIFF and DATEADD Usage Analysis, datediffdateadd This example describes how to add and subtract functions DATEDIFF and DATEADD on SQL Server. We will share this with you for your reference. The

Select Day (createtime) from Life_unite_product--the days value of the Take time fieldSelect Month (createtime) from Life_unite_product--take the month value of the Time fieldSelect year (createtime) from Life_unite_product--the yearly value of the

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

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: