1、DATE_ADD(date,INTERVAL expr type) 向日期添加指定的时间间隔; date: 参数是合法的日期表达式 expr: 参数是您希望添加的时间间隔 type:时间单位 2、TIMESTAMPDIFF(unit,time1,time2) 返回指定时间单位的 时间差 unit:单位 time1:时间1 time2:时间2 3、DATEDIFF(time1,time2) 返回2个时间的间隔天数 4、...
One of my other InformIT.com articles covered the functions DATEPART and DATENAME in detail. DATEPART retrieves a portion of the date and time value (month, day, weekday, year, hour, minute, and so on) as an integer; DATENAME returns the character (for weekdays) or integer (for everyth...
The following sections in this topic provide an overview of all Transact-SQL date and time data types and functions. For information and examples that are common to date and time data types and functions, see Using Date and Time Data. Date and Time Data Types Date and Time Functions ...
This is a key difference between a streaming query and a traditional RDMS query: streaming queries remain "open," producing more data, so the timestamp for when the query was run does not offer good information. LOCALTIMESTAMP, LOCALTIME, CURRENT_DATE, and CURRENT_TIMESTAMP all produce ...
In this post, you’ll learn how to use the SQL date and time functions to get the current date and time. What are date and time functions? SQL date and time functions provide different options that help with extracting, converting, and formatting date and time values. There are date funct...
Functions that return system date and time values Transact-SQL derives all system date and time values from the operating system of the computer on which the instance of SQL Server runs. Higher-precision system date and time functions Since SQL Server 2008 (10.0.x), the Database Engine derives...
Commonly Used Date Functions GETDATE() This function is used to get the current date and time. For example, SELECTGETDATE(); Here, the function returns the current date and time. CURRENT_TIMESTAMP This function is used to get the current timestamp in the system. For example, ...
The following table shows the date and time Entity SQL canonical functions. datetime is a System.Datetime value.Expand table FunctionDescription CurrentDateTime() Returns a System.Datetime value as the current date and time of the server in the server's time zone. Return Value A DateTime. ...
DATE_SUB 命令格式 datedate_sub(date|timestamp|string<startdate>,bigint<delta>) 命令说明 按照delta幅度增减startdate日期的天数。如果您需要获取在当前时间基础上指定变动幅度的日期,请结合GETDATE函数使用。 本命令与DATE_ADD的增减逻辑相反。 参数说明 ...
CURRENT_TIMESTAMPCURRENT_TIMESTAMP返回包含计算机的日期和时间的 datetime 值,SQL Server 的实例在该计算机上运行。 返回值不包括时区偏移量。datetime不具有确定性 GETDATEGETDATE ( )返回包含计算机的日期和时间的 datetime 值,SQL Server 的实例在该计算机上运行。 返回值不包括时区偏移量。datetime不具有确定性 ...