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(description)
Value (value)
GetYear ()
Returns the last two digits of the year
2001
GetMonth ()
Returns the month ordinal of the year (0 to 11)
5
GetDate ()
Returns the day ordinal of a month (1 to 31)
2
Getday ()
Returns the day ordinal of the week (0 to 6)
6
getTimezoneOffset ()
Difference in average time between returning local time and Greenwich Observa
ArticleDirectory
A small function for converting time and date formats
A small function for converting time and date formats
SQL> select to_char (sysdate, 'ssss'), sysdate from dual;To_ch sysdate------------------------62239 17:17:19Sssss: displays the number of seconds that have elapsed since midnight. It is eas
Tags: rdate SDA name SQL RDA timestamp mysq amp SelectDate-time functions1. Get the current date and timeSELECT now (), Sysdate (), Current_timestamp () from DUAL2. Get the current dateSELECT curdate (), Current_date () from DUAL3. Get the current timeSELECT curtime (), Current_time () from DUAL4. Calculates the difference between two dates DATEDIFF (DATE1,DATE2), which returns the number of days between da
)
Value (value)
GetYear ()
Returns the last two digits of the year
2001
GetMonth ()
Returns the month ordinal of a year (0 to one )
5
GetDate ()
Returns the day ordinal of a month (1 to
2
GetDay ()
Returns the day of the week (0 to 6)
6
getTimezoneOffset ()
Returns the difference between local time and Greenwich Mean Time
-4
Month( Current timestamp);--1--Get current dayValues Day( Current timestamp);--6--Get current TimeValuesHour Current timestamp);-- ---Get minutesValuesMinute Current timestamp);-- +--Get secondsValuesSecond Current timestamp);-- +--get millisecondsValuesMicrosecond ( Current timestamp);--4152692, DB2 time can be directly plus minus the time length of the unit.VALUES TIMESTAMP('2016-1-06 12:18:12')+1 Year;--2017/1/6 12:18:12VALUES TIMESTAMP('2016-1-06 12:18:12')+1 MONTH;--2016/2/6 12:18:12VALU
GrammarDateDiff (interval, date1, date2[, firstdayofweek[, FirstWeekOfYear])
The following named arguments are in the DateDiff function syntax:
This function calculates the number of date parts between two specified dates. The result is a signed integer value equal to (date2-date1) in the date part.
When the result
Date field: SQL Server Date field format in the same character field format, that is, a single quotation mark on it, Oracle Date field format is different, it is very wordy, there are only two ways to deal with:
A: Add a single quotation mark to its value. The arrange order format for year, month, day, time, and division must be consistent with Oracle's current
, first adaptation, etc.), and there is no one technology that is best for all programs. The processing of memory allocations in UNIX system calls is SBRK (2), which is not a general-purpose memory manager. It increases or decreases the process address space for the specified number of bytes. How the address space is managed depends on the process. The memory allocation function malloc (3) implements a specific type of assignment. If we do not like th
Label:getdate () function Returns the current date and time of the system in the default format of datetime Syntax format: getdate () Year () Month () Day () function Returns the year, month, and date value in Date_expression Syntax format: year/month/day (date_expression datetime/varchar) Returns int Example: Year (G
A new function is added to the ES6 standard: arrow function (arrowhead).
x => x *x
the arrow above is equivalent to:
function (x) {return
x*x;
}
The arrow function acts as an anonymous function and simplifies the definition of the
PHP (2) -- Powerful PHP time function: date () PHP has a relatively powerful time function date (). This method has the following parameters: echodate ( quot; Y-m-dH: I: s quot;); 2015-01-0913: 03: 30 if the time is incorrect, modify php. ini, to the; date. timezone: delete
GETDATE (): Gets the current date timeDATEADD (datepart, number, date), calculates the date after the increase. The parameter date is the day to be calculated, the parameter number is increment, the parameter datepart is the unit of measurement, and the optional value is shown in remarks. DATEADD (day, 3,
If you want to get the current time for PHP beginners, you can use the time function date () to format a local time/date and write a test code:
Echo date ('Y-m-d h: I: s ');? > 〉
Output Current Time: 02:32:17The actual time is 10:32:17.Is it because the date (
: 8639990000000/(10000000) = 863999.NegativeThe above is a late date minus the earlier date, so the value of each property is a positive number, and if it is an earlier date that is less late, the property value is negative.TimeSpan (int days,int hours,int minutes,int seconds)function to find out the last published tim
: 8639990000000/(10000000) = 863999.NegativeThe above is a late date minus the earlier date, so the value of each property is a positive number, and if it is an earlier date that is less late, the property value is negative.TimeSpan (int days,int hours,int minutes,int seconds)function to find out the last published tim
late date minus the earlier date, so the value of each property is a positive number, and if it is an earlier date that is less late, the property value is negative.TimeSpan (int days,int hours,int minutes,int seconds)function to find out the last published timepublic string Datestringfromnow (DateTime dt){TimeSpan sp
Describes how to use the Date () function in PHP. We want to compile the first PHP function Date () to get the current time code :? Phpecho $ showtimedate (Y-m-dH: I: s );? Display format: year-month-day hour: minute: second 2, PHP5 PH we want to write in
I. PHP function
the current week of Sunday, no time or secondsTrunc (sysdate, ' Q ') QUARTER,--return to the current quarter of 1st, no time secondsTrunc (sysdate, ' D ') WEEK--return to the current week of Sunday, no time or seconds2. Round (d, [?] ) rounded to the nearest dateSelect Sysdate S1,Round (sysdate) S2,Round (sysdate, ' Year ') year,--rounded to the nearest 2014/1/1Round (sysdate, ' Month ') month,--rounded to the nearest month 2014/6/1Round (sysdate, ' Day ') day--rounded to the nearest Sunday 201
The date and time of the date function cardinality expression or the return value from the time interval.GETDATE (), returns the date and time of the current system. Cases:SELECT GETDATE (); The result: 2010-05-18 15:53:08.920DATEPART (Item,date), returns the
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