datediff function in sql

Simulate two SQL server functions: dateadd () and datediff (). read the two functions that simulate SQL Server: dateadd (), datediff (),? Php // File name: date. inc. php3 // before using these two functions, convert the date or date to the timestamp type. // For example: // $ today = mktime (0, // File name: date. inc

Datadiff is used to get datasets within a specified time interval, such as: SelectCount (1) ascol2 fromComplaintmain cmwhereDateDiff (dd,cm. Createdon,getdate ())7and cm. Handlingby="+ (int) HANDLINGBY.MEMBERCD + @"and cm. Cstate="+ (int) complaintstate.successfully +";";The above query is to get the condition data for one week;Function method:DATEDIFF (DatePart, StartDate, EndDate)DatePart Parameters: DatePart Abbrev

Datediff Function DescriptionReturns the interval between two dates.SyntaxDatediff (interval, date1, date2 [, firstdayofweek] [, firstweekofyear])The syntax of the datediff function includes the following parameters: Parameter descriptionInterval is required. String expression used to calculate the time interval

function DateDiff function Describe Returns the time interval between two dates. Grammar DateDiff (interval, date1, date2 [, firstdayofweek][, FirstWeekOfYear]]) The syntax for the DATEDIFF function has the following parameters:

DateDiff function Describe Returns the time interval between two dates. Grammar DateDiff (interval, date1, date2 [, firstdayofweek][, FirstWeekOfYear]]) The syntax for the DATEDIFF function has the following parameters: Parameter description Interval must be selected. A st

first day of a year Select dateadd (YY, datediff (YY, 0, getdate (), 0) -- Query the first day of a quarter Select dateadd (QQ, datediff (QQ, 0, getdate (), 0) -- Query the last day of the last month (equivalent to the first day of the month minus one day) Select dateadd (day,-1, dateadd (mm, datediff (mm, 0, getdate (), 0 )) -- Query the last day of

Label:Describe returns a time interval between two dates. Grammar DateDiff ( interval , Date1 , Date2[ , FirstDayOfWeek[ , FirstWeekOfYear]] ) The syntax for the DateDiff function has the following parameters: Parameters Describe Interval Must be selected. A string expression th

function | DateDiff function DescribeReturns the time interval between two dates.GrammarDateDiff (interval, date1, date2 [, firstdayofweek][, FirstWeekOfYear]])The syntax for the DATEDIFF function has the following parameters: Parameter descriptionInterval must be select

Datediff Function ReturnVariant(Long) Indicates the number of time intervals between two specified days. Syntax Datediff (interval, date1, date2 [, firstdayofweek [, firstweekofyear]) Part Description Interval Required. String expression used to calculateDate1AndDate2Time Difference Date1 □date2 Required;Variant(Date). The two

Computer room charges to do on the machine and the next part, the need to calculate from the machine to the time difference between the machine, so as to calculate the costs incurred during the machine. At this time, you can use a function can be simple to implement--datediff (), the specific use of rules: DateDiff (Timeinterval,date1,date2 [, FirstDayOfWeek [,

Label:Grammar: DATEDIFF (datepart,startdate,enddate) The datepart parameter can be the following value: Date-part:year | Quarter | Month | Week | Day | Hour | Minute | Second | Millisecond The parameter date-part specifies the date portion of the interval to be measured. DatePart Abbreviations Years YY, yyyy Quarter QQ, Q Month MM, M The day of the year

Simulate two SQL server functions: dateadd () and datediff ().? Php file name: date. inc. php3 before using these two functions, you must first convert the date or date to the timestamp type. For example: $ todaymktime (0, 0, 0, date (m), date (d), date (Y )); // File name: date. inc. php3 // Before using these two functions, convert the date or date to the timestamp type. // For example: // $ Today = mktim

SELECT DATEDIFF (year, ' 1992-11-28 ', GETDATE ())--age, where year can be replaced by day MONTHSELECT DATEPART (Month,getdate ())-Returns an integer representing the specified date portion of the specified date. such as 12SELECT datename (WEEKDAY, ' 2014-11-12 ')--Returns the specified day of the week, such as Monday,SELECT Datename (Weekday,getdate ())--Returns the current date is the day of the weekSELECT Datename (Week,getdate ())--Returns the cur

, $sec, $month, $day, $year); return $ret; } /**** simulate the DATEDIFF function in SQL Server ******* $part Type: string Value range: year,month,day,hour,min,sec Which part of the date to increase $date 1, $date 2 type: Timestamp Indicates: two dates to compare Return type: Numeric value End * (*************/ function