Time zone resolution and how to adjust the time zone in Linux preface today we found that the system time of Centos6.0-64bit in Vmware is several hours different from that of the host machine. after adjusting the system time, restart and restore the
Time zone resolution and how to adjust the time zone in Linux preface today we found that the Centos 6.0-64bit system time in Vmware differs from the host time for several hours, after adjusting the system time, restart and restore the system. So I
First, several applications of date-time conversion in Asp.net:
1. 2.E. Item. Cell [0]. Text = Convert. ToDateTime (e. Item. Cell [0]. Text). to1_datestring ();3.String. Format ("yyyy-MM-dd", yourDateTime );4.Convert. ToDateTime ("2005-8-23").
View the current Ubuntu system time zoneDate -: £ º +0800 It shows the time in East eight and the GMT.Then enter Tzselect follow the prompts to modify the corresponding time zone This example is modified to central US time west of the six district~$
Http://www.linuxidc.com/Linux/2010-09/28537.htmThe exchange of date and timestamp under Linux1. Date to timestamp:$ Date-d ' 2009-12-01 23:20 ' +%s 12596808002. Timestamp to date$ Date-d ' 1970-01-01 1259680800 sec UTC ' Tue Dec 1 23:20:00 CST 20093.
Date functionDate functions manipulate Date values (fields of date type), timestamp values (TIMESTAMP, TIMESTAMP with time ZONE, and TIMESTAMP with the fields of the local time ZONE type), and interval values (INTERVAL day to SECOND and INTERVAL
Internal storage format:
century, year, month, day, hour, minute, second
The default format is: DD-MON-RR.
Sysdate returns the current system time.
SELECT sysdate from DUAL;
The mathematical operation of a date
SELECT (sysdate-hire_date)/7 from
Internal Storage Format:Century, year, month, day, hour, minute, secondThe default format is DD-MON-RR.SYSDATE returns the current system time.Select sysdate from dual;Mathematical operations on datesSELECT (SYSDATE-HIRE_DATE)/7 from tablename where
---------------------------------------------Date/Time function-------------------------------------------------1: Sysdate is used to get the current date of the system select Sysdate from Dual;--2: add_months Add or Subtract month select To_char
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