sql datediff seconds

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)

Before we know that SQL has the DateDiff () function, we need to calculate the date and time difference. I will directly put it in a program like php, asp, and asp.net for calculation, now I will share with you how to use the DateDiff function to

Learn from:http://bjtdeyx.iteye.com/blog/1447300The most common statements for SQL date queries -- query data on the first anniversary of the date of the day select * from shoporder where datediff (Week,ordtime,getdate () - 1 ) = 0 --

Datediff usage in SQL Server Datediff function [Date and Time] FunctionReturns the interval between two dates. SyntaxDatediff (date-part, date-expression-1, date-expression-2) Date-part:Year | quarter | month | week | Day | hour | minute |Second |

DATEDIFF function [date and time]The function returns the interval between two dates.Grammar DATEDIFF (Date-part, date-expression-1, date-expression-2)Date-part:year | Quarter | Month | Week | Day | Hour | Minute | Second | MillisecondThe parameter

Address: http://sunboyyyl.blog.163.com/blog/static/224738120112874910613/ Datediff function [Date and Time] Function: returns the interval between two dates. SyntaxDatediff (date-part, date-expression-1, date-expression-2) Date-part: Year |

Returns a time interval between two dates. GrammarDateDiff (interval, date1, date2 [, firstdayofweek][, FirstWeekOfYear]])The syntax for the DATEDIFF function has the following parameters:Parameter Description Interval must be selected. A string

Grammar:DATEDIFF (datepart,startdate,enddate)The datepart parameter can be the following value:Date-part:year | Quarter | Month | Week | Day | Hour | Minute | Second | MillisecondThe parameter date-part specifies the date portion of the interval to

PHP implementation of DateDiff and DateAdd time function code sharing, Datediffdateadd Extended time functions in PHP DateDiff and DateAdd function DateDiff ($part, $begin, $end) {$diff = Strtotime ($end)-Strtotime ($begin), switch ($part) {case "Y"

The DATEDIFF () function returns the number of days between two dates.SyntaxThe startdate AND enddate parameters of DATEDIFF (datepart, startdate, enddate) are valid date expressions.Use the following SELECT statement: The code is as follows:Copy