months_between current time and birthday : MONTHS_BETWEEN « Date Timestamp Functions « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial
1.Introduction
2.Query Select
3.Set
4.Insert Update Delete
5.Sequences
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10.SQL Data Types
11.Character String Functions
12.Aggregate Functions
13.Date Timestamp Functions
14.Numerical Math Functions
15.Conversion Functions
16.Analytical Functions
17.Miscellaneous Functions
18.Regular Expressions Functions
19.Statistical Functions
20.Linear Regression Functions
21.PL SQL Data Types
22.PL SQL Statements
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24.PL SQL Programming
25.Cursor
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27.Function Procedure Packages
28.Trigger
29.SQL PLUS Session Environment
30.System Tables Data Dictionary
31.System Packages
32.Object Oriented
33.XML
34.Large Objects
35.Transaction
36.User Privilege
Oracle PL/SQL Tutorial » Date Timestamp Functions » MONTHS_BETWEEN 




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);

row created.

SQL> insert into employees values(2,'Jerry',  'J',  'SALESREP',3,   date '1966-11-19',  1600300,   10);

row created.

SQL> insert into employees values(3,'Jord',   'T' 'SALESREP',4,   date '1967-10-21',  1700500,   20);

row created.

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

row created.

SQL> insert into employees values(5,'Joe',    'P',  'SALESREP',6,   date '1969-08-23',  19001400,  30);

row created.

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

row created.

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

row created.

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

row created.

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

row created.

SQL> insert into employees values(10,'Pink',  'J',  'SALESREP',null,date '1974-03-28',  24000,     30);

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
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