extract day from birthday : EXTRACT « Date Timestamp Functions « Oracle PL/SQL Tutorial





SQL>
SQL>
SQL> create table employees(
  2    empno      NUMBER(4)
  3  , ename      VARCHAR2(8)
  4  , init       VARCHAR2(5)
  5  , job        VARCHAR2(8)
  6  , mgr        NUMBER(4)
  7  , bdate      DATE
  8  , msal       NUMBER(6,2)
  9  , comm       NUMBER(6,2)
 10  , deptno     NUMBER(2) ) ;

Table created.

SQL>
SQL>
SQL> insert into employees values(1,'Jason',  'N',  'TRAINER', 2,   date '1965-12-18',  800 , NULL,  10);

1 row created.

SQL> insert into employees values(2,'Jerry',  'J',  'SALESREP',3,   date '1966-11-19',  1600, 300,   10);

1 row created.

SQL> insert into employees values(3,'Jord',   'T' , 'SALESREP',4,   date '1967-10-21',  1700, 500,   20);

1 row created.

SQL> insert into employees values(4,'Mary',   'J',  'MANAGER', 5,   date '1968-09-22',  1800, NULL,  20);

1 row created.

SQL> insert into employees values(5,'Joe',    'P',  'SALESREP',6,   date '1969-08-23',  1900, 1400,  30);

1 row created.

SQL> insert into employees values(6,'Black',  'R',  'MANAGER', 7,   date '1970-07-24',  2000, NULL,  30);

1 row created.

SQL> insert into employees values(7,'Red',    'A',  'MANAGER', 8,   date '1971-06-25',  2100, NULL,  40);

1 row created.

SQL> insert into employees values(8,'White',  'S',  'TRAINER', 9,   date '1972-05-26',  2200, NULL,  40);

1 row created.

SQL> insert into employees values(9,'Yellow', 'C',  'DIRECTOR',10,  date '1973-04-27',  2300, NULL,  20);

1 row created.

SQL> insert into employees values(10,'Pink',  'J',  'SALESREP',null,date '1974-03-28',  2400, 0,     30);

1 row created.

SQL>
SQL> select bdate
  2  ,      extract(day   from bdate) as day_of_birth
  3  from   employees;

BDATE     DAY_OF_BIRTH
--------- ------------
18-DEC-65           18
19-NOV-66           19
21-OCT-67           21
22-SEP-68           22
23-AUG-69           23
24-JUL-70           24
25-JUN-71           25
26-MAY-72           26
27-APR-73           27
28-MAR-74           28

10 rows selected.

SQL>
SQL> drop table employees;

Table dropped.

SQL>
SQL>










13.6.EXTRACT
13.6.1.EXTRACT() to extract and return a year, month, day, hour, minute, second, or time zone from the timestamp types or a DATE.
13.6.2.SELECT EXTRACT(MONTH FROM TO_DATE('01-JAN-2005 19:15:26','DD-MON-YYYY HH24:MI:SS')) As MONTH
13.6.3.SELECT EXTRACT(YEAR FROM TO_DATE('01-JAN-2005 19:15:26','DD-MON-YYYY HH24:MI:SS')) AS YEAR
13.6.4.EXTRACT() gets the hour, minute, and second from a TIMESTAMP returned by TO_TIMESTAMP()
13.6.5.EXTRACT(MINUTE FROM TO_TIMESTAMP('01-JAN-2005 19:15:26', 'DD-MON-YYYY HH24:MI:SS')) AS MINUTE
13.6.6.EXTRACT(SECOND FROM TO_TIMESTAMP('01-JAN-2005 19:15:26', 'DD-MON-YYYY HH24:MI:SS')) AS SECOND
13.6.7.EXTRACT()gets the time zone hour, minute, second, region, and region abbreviation from a TIMESTAMP WITH TIMEZONE returned by TO_TIMESTAMP_TZ()
13.6.8.EXTRACT(TIMEZONE_MINUTE FROM TO_TIMESTAMP_TZ('01-JAN-2005 19:15:26 -7:15', 'DD-MON-YYYY HH24:MI:SS TZH:TZM'))
13.6.9.EXTRACT(TIMEZONE_REGION FROM TO_TIMESTAMP_TZ('01-JAN-2005 19:15:26 PST', 'DD-MON-YYYY HH24:MI:SS TZR'))
13.6.10.EXTRACT(TIMEZONE_ABBR FROM TO_TIMESTAMP_TZ('01-JAN-2005 19:15:26 PST', 'DD-MON-YYYY HH24:MI:SS TZR'))
13.6.11.extract year from birthday
13.6.12.extract month from birthday
13.6.13.extract day from birthday
13.6.14.Extract year, month, day from a date
13.6.15.Order date value by only year field with extract() function