sql datediff hours and minutes

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 --

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"

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

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

The DATEDIFF () function returns the number of days between two dates.SyntaxDATEDIFF (datepart, startdate, enddate)The startdate AND enddate parameters are valid date expressions.You need to know how many days the difference between a specified date

Server Date functionDefinition and usageThe DATEDIFF () function returns the number of days between two dates.GrammarDATEDIFF (datepart,startdate,enddate)The startdate and enddate parameters are valid date expressions.The datepart parameter can be

SQL Query day, week, month record--Day of enquiry:[SQL] View plaincopyprint?SELECT * FROM info where DateDiff (dd,datetime,getdate ()) =0--Query within 24 hours:[SQL] View plaincopyprint?SELECT * FROM info where DateDiff (hh,datetime,getdate ())

1 /**2 * Calculate the difference of two time, the number of days, years, months, minutes, number of seconds3 * 4 * @paramDatetype The type of difference between two times to get, for example, the number of days to get a two time difference? or

SQL Time function, the need for friends can refer to the next. 1. Current system date, time select GETDATE ()2. DateAdd returns a new datetime value based on adding a period of time to the specified date for example: Add 2 days to the date select

SQL Server Date and Time Processing set When the convert date conversion format is 20 or 120, the resulting string does not contain milliseconds.For example, select convert (varchar (23), getdate (), 120 or 20)21:46:43 When the date conversion