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Oracle9i SQL Reference
Release 2 (9.2)

Part Number A96540-01
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Functions, 73 of 177


MONTHS_BETWEEN

Syntax

months_between::=

Text description of functions179.gif follows
Text description of months_between


Purpose

MONTHS_BETWEEN returns number of months between dates date1 and date2. If date1 is later than date2, then the result is positive. If date1 is earlier than date2, then the result is negative. If date1 and date2 are either the same days of the month or both last days of months, then the result is always an integer. Otherwise Oracle calculates the fractional portion of the result based on a 31-day month and considers the difference in time components date1 and date2.

Examples

The following example calculates the months between two dates:

SELECT MONTHS_BETWEEN 
   (TO_DATE('02-02-1995','MM-DD-YYYY'),
    TO_DATE('01-01-1995','MM-DD-YYYY') ) "Months"
    FROM DUAL;

    Months
----------
1.03225806

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