date difference function in netezza

Php date function example: get the last day of the month /** * Date-get the last day of the current month * @ Return int */ Public function get_lastday (){ If ($ this-> month = 2 ){ $ Lastday = $ this-> is_leapyear ($ this-> year )? 29: 28; } Elseif ($ this->

Tags: get iter A format types argument return digital HTTPSReference: Https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_unix-timestamp Unix_timestamp () : Returns a UNIX TIMESTAMP (seconds since ‘1970-01-01 00:00:00‘ UTC).--the difference in the number of seconds from ' 1970-01-01 00:00:00 ' to the current time Cases: SELECT Unix_timestamp (); ====> 1507520072 Unix_timestamp (

1. Day (date_expression)Returns the date value in Date_expression2. Month (date_expression)Returns the month value in Date_expression3. Year (date_expression)Returns the year value in Date_expression4, DATEADD ()DATEADD (Returns the new date specified by date plus the specified extra date interval number.5, DATEDIFF ()

/** * Date-get last day of the month * @return int */ Public Function Get_lastday () { if ($this->month==2) { $lastday = $this->is_leapyear ($this->year)? 29:28; } elseif ($this->month==4 | | $this->month==6 | | $this->month==9 | | $this->month==11) { $lastday = 30; } else { $lastday = 31; } return $lastday; }

. Php calculates the number of days of the difference between two dates. PHP numeric judgment function How does PHP determine whether a GIF image is a dynamic image (animation) Php gets the method of each month in a certain period of time, and returns an array composed of these months Php calculates the number of weeks in a year or January. The author now seems to be quite familiar with the constel

stamp parameter. Timestamp_format returns a time stamp from a string that has been interpreted with a character template. Timestampdiff The estimated slack represented by the type defined by the first parameter, based on the time difference between two timestamps. To_char returns the character representation of a timestamp that has been formatted with a character template. To_char is synonymous with Varchar_format. To_date returns a time stamp from a

()-Interval ' 3 week '; ;?column? - ------------------------------ 2013-03-22 16:00:04.203735+08 (1 row) david=# 2.4 10 minutes later david=# Select Now () + ' min '; ?column? ------------------------------- 2013-04-12 16:12:47.445744+08 (1 row) david=# Description Interval can not write, its value can be: abbreviation meaningY YearsM Months (in the date part)W WeeksD daysH HoursM Minutes (in the time part)S Seconds 2.5 Ca

Recently I wrote a countdown program, because it often needs to be accessed on the mobile phone end, so jquery is not referenced. I am not used to jquery. The following describes the js date-related functions and the principle of countdown. The Code is as follows: Var dateTo = new Date ("8:00 1/4/2014 "); Gets the time object of the specified date. If it is nul

) {function body;Return ... ；}The common denominator of the two functions is that both can execute the callThe difference is: function declaration function is called by the function name, JS has pre-parsing function, pre-parsing

code mysql> Select Now (), Sleep (3), now (), +– ——————-+ ———-+ ——————— + | Now () | sleep (3) | Now () | +– ——————-+ ———-+ ——————— + | 2008-08-08 22:28:21 | 0 | 20 08-08-08 22:28:21 | +– ——————-+ ———-+ ——————— + Mysql> Select Sysdate (), Sleep (3), sysdate (); +– ——————-+ ———-+ ——————— + | sysdate () | sleep (3) | sysdate () | +– ——————-+ ———-+ ——————— + | 2008-08-08 22:28:41 | 0 | 2008-08-08 22:28:44 | +– ——————-+ ———-+ ——————— + As you can see, the ti

datetime模块中有timedelta类, the object of this class is used to represent a time interval, such as a two-day # period or a time difference.#计算两个日期的间隔Import datetimeD1 = Datetime.datetime.strptime (' 2012-03-05 17:41:20 ', '%y-%m-%d%h:%m:%s ')D2 = Datetime.datetime.strptime (' 2012-03-02 17:41:20 ', '%y-%m-%d%h:%m:%s ')Delta = d1-d2Print delta.days Print Delta#今天的n天后的日期Import datetimeNow=datetime.datetime.now ()Delta=datetime.timedelta (days=3)N_days=now+d

We want to write a First, PHP function date () Gets the current time Code: php echo $showtime=date("y-m-d h:i:s "); ?> Format displayed: Year-month-day hours: minutes: seconds Second, PHP5 php function date () Get time

Oracle date and time processing function Summary In to_date format Day: Dd number 12 Dy abbreviated Fri Day spelled out Friday Ddspth spelled out, ordinal twelfth Month: MM number 03 Mon abbreviated MAR Month spelled out March Year: YY two digits 98 Yyyy four digits 1998 The time range in the 24-hour format is: 0:00:00-23:59:59 ....The time range in the 12-hour format is: 1:00:00-12:59:59 .... 1.

();+---------------------+----------+---------------------+| Now () | Sleep (2) | Now () |+---------------------+----------+---------------------+| 2013-05-16 17:16:18 | 0 | 2013-05-16 17:16:18 |+---------------------+----------+---------------------+1 row in Set (2.00 sec)From the above you can see the difference between sysdate and now, where the time of the statement begins, and the Sysdate real-time acquisition time returns the current