date function

Get System Current DateTime: Sysdate () Gets the system current date: Curdate () Gets the system current time: Curtime () Gets the year of the given date: yearly (date) Gets the month of the given date: month (date) A function that adds a time

First, mathematical functionsMathematical functions are mainly used for processing numbers, including integers, floating-point numbers, and so on.ABS (x)Returns the absolute value of XSELECT ABS (-1)--return 1Ceil (x), CEILING (x)Returns the

Sybase Date functionDate functionGETDATE ()Get the current time, can be set to get a variety of time formats.DATEPART (date part, date)Take a certain part of the specified time, month and day seconds.DateDiff (date part, date 1, date 2)Calculates

Reference:http://www.cnblogs.com/coconut_zhang/archive/2009/02/02/1382598.htmlHttp://blog.itpub.net/14766526/viewspace-1156100/Select GETDATE () as ' current date ',Datename (Year,getdate ()) as ' year ',Datename (Month,getdate ()) as ' month

Create or replace function trunc (P_timestamp timestamp with time zone,  p_formart varchar default  ' DD ')  returns timestamp without time  zone as$ $declare  v_timestamp timestamp := null; v_formart varchar (Ten)   : = upper (P_formart);begin /* * 

1. Get the current timeSELECT GETDATE () as ' current date ', Datename (year, GETDATE ()) as ' Years ', datename (month, GETDATE ()) as ' month ',        Datename (Day, GETDATE ()) as ' Days ', Datename (DW, GETDATE ()) as ' Week ', Datename (week,

（1) Date function1, year--take the year out2, DateAdd (Day5 '1999-02-27'）--in the date basically added 5 days no one AH and then output3, datedif--How many days do two dates differ4, weekday--string form, the day of the week in one weeks5, week--int

String functions, mathematical functions, date functions, logical operation functions, and other functions String functions, mathematical functions, date functions, logical operation functions, and other functions Single-record functions in SQL 1

The following constants are defined in PHP 5.1.1 to provide standard Expression Methods for date formats (such as date ()). DATE_ATOM (string) Atomic Clock format (for example, 2005-08-15T15: 52: 01 + 00: 00) DATE_COOKIE (string) HTTP cookie format (

The following constants are defined in PHP 5.1.1 to provide standard Expression Methods for date formats (such as date ()). DATE_ATOM (string) Atomic Clock format (for example, 2005-08-15T15: 52: 01 + 00: 00) DATE_COOKIE (string) HTTP cookie

1. yyyy-mm-ddhh24: mi: ssYYMMDDHH24: MI: SS: y indicates the last digit of the year yy indicates the last two digits of the year yyy indicates the last three digits of the year yyyy indicates the year with four digits; mm indicates the month with

Method 1 Code as follows SELECTconvert (char (6), getdate (), 112) method 2 Code as follows select * from table name whereConvert (varchar (100), Date Field, 23) use the Convert () function: selectconvert (char (10), GetDate (), 120) asDate * 3rd

There are several areas in this project that need to be entered recently. Since there is no validity verification for these areas at the beginning, there are many invalid dates in the result user input date, such as 2007-2-29, there are also error

All functions in PHP are in the Unix era, starting January 1, 1970. The date is the number of seconds from this time onwards. When a function call is counted as the number of seconds from this time, it is treated as a (timestamp) timestamp. local

PHP 5.1.1 defines the following constants to provide a standard date expression method, which can be used for date format functions such as Date (). Date_atom (String) Atomic clock format (eg: 2005-08-15t15:52:01+00:00) Date_cookie (String) HTTP

echo Date (' y-m-d h:i:s ', Time ()); Output is: 2013-03-14 12:15:27 echo gmdate (' y-m-d h:i:s ', Time ()); Output is: 2013-03-14 04:15:27 Copy CodeThe above is the result of running PHP under Linux+apache.Running under Windows, the 2

Add date_default_timezone_set (PRC) to the front of the page ); /* Change the time to Beijing time. The default PhP5 time is Greenwich Mean Time. */ Date () : "Am" or "PM" A : "Am" or "PM" D : Day (s), double-digit characters. If not, zeros are

Array class Indexof (Object O): Number Whether the object is in the array. If-1 is not found, the returned position is found. Remove (Object O): Array Deletes the specified object from the array. If the object cannot be found, the array does not

Date--Format a local time/dateDescriptionStringDate(String format [, int timestamp])Returns the integerTimestampString generated based on the given format string. If no timestamp is provided, the current local time is used. In other

PHP users may have encountered this situation. Date ("Y-m-d h: I: s") Total server time differences Hours. I checked it online to find out. Originally, from php5.1.0, the date. timezone option was added to PhP. ini. Is disabled by default, that is,