The EXTRACT() function returns the value of a specified datetime field from a datetime or interval value expression.

 
SQL>
Syntax: EXTRACT([[YEAR]|[MONTH]|[DAY]|[HOUR]|[MINUTE]|[SECOND]]|
[[TIMEZONE_HOUR]|[TIMEZONE_MINUTE]|[TIMEZONE_REGION]|[TIMEZONE_ABBR])
SQL>
SQL>
SQL> SELECT
  2     EXTRACT(YEAR FROM SYSDATE) current_year
  3  FROM dual;

CURRENT_YEAR
------------
        2008

SQL>
SQL>

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1.	EXTRACT(): return a year, month, day, hour, minute, second, or time zone from x
2.	EXTRACT(MONTH FROM TO_DATE('01-JAN-2005 19:15:26', 'DD-MON-YYYY HH24:MI:SS'))
3.	EXTRACT(DAY FROM TO_DATE('01-JAN-2005 19:15:26', 'DD-MON-YYYY HH24:MI:SS'))
4.	EXTRACT(): get the hour, minute, and second from a TIMESTAMP returned by TO_TIMESTAMP()
5.	EXTRACT(TIMEZONE_HOUR FROM TO_TIMESTAMP_TZ('01-JAN-2005 19:15:26 -7:15', 'DD-MON-YYYY HH24:MI:SS TZH:TZM')
6.	EXTRACT(TIMEZONE_MINUTE FROM TO_TIMESTAMP_TZ('01-JAN-2005 19:15:26 -7:15', 'DD-MON-YYYY HH24:MI:SS TZH:TZM'))
7.	EXTRACT(TIMEZONE_ABBR FROM TO_TIMESTAMP_TZ('01-JAN-2005 19:15:26 PST', 'DD-MON-YYYY HH24:MI:SS TZR'))
8.	EXTRACT(TIMEZONE_REGION FROM TO_TIMESTAMP_TZ('01-JAN-2005 19:15:26 PST', 'DD-MON-YYYY HH24:MI:SS TZR'))
9.	select extract( year from add_months(sysdate,36) ) "3 Years Out"

The EXTRACT() function returns the value of a specified datetime field from a datetime or interval value expression. : EXTRACT « Date Timezone « Oracle PL / SQL

Related examples in the same category