months_between current time and birthday : MONTHS_BETWEEN « 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>
SQL> select ename
  2  ,      months_between(sysdate,bdate)
  3  from   employees;

ENAME    MONTHS_BETWEEN(SYSDATE,BDATE)
-------- -----------------------------
Jason                       511.218995
Jerry                       500.186737
Jord                        489.122221
Mary                        478.089963
Joe                         467.057705
Black                              456
Red                         444.993189
White                       433.960931
Yellow                      422.928673
Pink                        411.896415

10 rows selected.

SQL>
SQL> drop table employees;

Table dropped.










13.10.MONTHS_BETWEEN
13.10.1.MONTHS_BETWEEN(x, y): get the number of months between x and y.
13.10.2.Returned result is a negative number of months
13.10.3.Use the MONTHS_BETWEEN function
13.10.4.SELECT MONTHS_BETWEEN('15-JAN-2005', '25-MAY-2005')
13.10.5.months_between current time and birthday
13.10.6.Months between birthday and now