DATEADD()函数:SQL Server中的此函数用于将时间或日期间隔汇总到指定日期,然后返回修改后的日期。 特征: 此函数用于将时间或日期间隔汇总到指定的日期。 此函数位于日期函数下。 此函数接受三个参数,即间隔,数字和日期。 此函数还可以在间隔部分包括时间。 用法: DATEADD(interval, number, date) 参数:该方法接受...
可以使用 DateAdd 函数对日期加上或减去指定的时间间隔。例如,可以用 DateAdd 来计算距今天为三十天的日期;或者计算距现在为 45 分钟的时间。 为了对 date 加上“日”,可以使用“一年的日数” (“y”),“日” (”d”) 或“一周的日数” (”w”)。 DateAdd 函数将不返回有效日期。在以下实例中将 1 月3...
This SQL Server tutorial explains how to use the DATEADD function in SQL Server (Transact-SQL) with syntax and examples. In SQL Server (Transact-SQL), the DATEADD function returns a date after which a certain time/date interval has been added.
The DATEADD() function adds a time/date interval to a date and then returns the date. Syntax DATEADD(interval,number,date) Parameter Values ParameterDescription intervalRequired. The time/date interval to add. Can be one of the following values: ...
select dateadd(minute,5,timetz_val) as minplus5_tz from timetz_test; minplus5_tz --- 04:05:00+00 00:05:00.5550+00 06:03:00+00 以下示例将 2 小时添加到一个文本 timetz 值。 select dateadd(hour, 2, timetz '13:24:55 PST'); date_add --- 23:24:55+00 具有TIMESTAMP 列的示例...
DateAdd(String, Nullable<Double>, Nullable<DateTimeOffset>) 向指定的日期添加间隔,以此返回新的日期值。 C# [System.Data.Objects.DataClasses.EdmFunction("SqlServer","DATEADD")]publicstaticDateTimeOffset? DateAdd (stringdatePartArg,double? number, DateTimeOffset? dateTimeOffsetArg); ...
SELECTDATEADD(month, -(10/2), SYSDATETIME()); Specify ranking functions as number This example uses a ranking function as an argument fornumber. SQL SELECTp.FirstName, p.LastName,DATEADD(day, ROW_NUMBER()OVER(ORDERBYa.PostalCode), SYSDATETIME())AS'Row Number'FROMSales.SalesPersonASsINNERJOI...
Note: DATEADD() function returns an error if the number argument exceeds the range of int.date: A datetime value or an expression that resolves to a datetime value. It can be a string expression, a table column, or a variable. A string literal value must resolve to type DATE, DATETIME,...
Function NameDescription DATEADD Adds an interval to a date value in SQL Server. DATEDIFF Calculates the difference between two dates in MySQL and SQL Server. DATEPART Extracts a specific part of a date/time value in SQL Server. GETDATE Retrieves database time in SQL Server. SYSDATE ...
Examples of Using the SQL Server DATEADD Function Below are examples of using the DATEDIFF function: One practical example of using the DATEDIFF function in SQL Server is in aWHERE clauseby selecting all employees in the AdventureWorks2008R2 database whose date of hire was in March 2003. The ...