alaska and hawaii in same time zone

Rm/etc/localtimeLn-sf/usr/share/zoneinfo/america/anguilla/etc/localtimeTo re-establish a soft connection for the localtime configuration problemImmediate effect[[Email protected] ~]# DateFri SEP 4 04:58:20 AST 2015Set the system time:Date-s

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

First look at the manual introduction:strtotime-to parse the datetime description of any English text into a Unix timestampFormat: int strtotime (string $time [, int $now])This function expects to accept a string containing the U.S. English date

First look at the manual introduction: strtotime-resolves a date-time description of any English text to a Unix timestamp Format: int strtotime (string $time [, int $now]) This function expects to accept a string containing the U.S. English date

Oracle databases perform detailed operations on date data. The expression of date data involves the system time zone and time format. Oracle system functions such as to_date ('string', 'format') and to_char (Date, 'format') are often used. Therefore,

First, mathematical

---------------------------------------------Date/Time function-------------------------------------------------1:sysdateThe current date used to get the systemSELECT sysdate from DUAL;--2:add_monthsAdd or subtract a monthSELECT To_char (add_months (