Oracle Age calculation from Date of birth and Today

Question

I want to calculate the current Age from Date of Birth in my Oracle function.

What I am using is (Today-Dob)/30/12, but this is not accurate as some months have 31 days.

I need to get the correct age with the maximum precision. How can I do that?

Answer 1

SQL> select trunc(months_between(sysdate,dob)/12) year,
  2         trunc(mod(months_between(sysdate,dob),12)) month,
  3         trunc(sysdate-add_months(dob,trunc(months_between(sysdate,dob)/12)*12+trunc(mod(months_between(sysdate,dob),12)))) day
  4  from (Select to_date('15122000','DDMMYYYY') dob from dual);

      YEAR      MONTH        DAY
---------- ---------- ----------
         9          5         26

SQL>

Answer 2

????? ??????? ????? ?? ??? ??? ???? (?? ???) ?? ?????:

select months_between(TRUNC(sysdate),
                      to_date('15-Dec-2000','DD-MON-YYYY')
                     )/12
as age from dual;

       AGE
----------
9.48924731

Answer 3

SELECT 
TRUNC((SYSDATE - TO_DATE(DOB, 'YYYY-MM-DD'))/ 365.25) AS AGE_TODAY FROM DUAL;

???? ?? ???? ??????? ??? ??? ??????.

Answer 4

????? ?? ??? ??????? ?? ?????? ???????? (??? ????? ?? ?? ???? ??? ???? ?? ???):

SQL> with some_birthdays as
  2  ( select date '1968-06-09' d from dual union all
  3    select date '1970-06-10' from dual union all
  4    select date '1972-06-11' from dual union all
  5    select date '1974-12-11' from dual union all
  6    select date '1976-09-17' from dual
  7  )
  8  select trunc(sysdate) today
  9       , d birth_date
 10       , extract(year from numtoyminterval(months_between(trunc(sysdate),d),'month')) age
 11    from some_birthdays
 12  /

TODAY               BIRTH_DATE                 AGE
------------------- ------------------- ----------
10-06-2010 00:00:00 09-06-1968 00:00:00         42
10-06-2010 00:00:00 10-06-1970 00:00:00         40
10-06-2010 00:00:00 11-06-1972 00:00:00         37
10-06-2010 00:00:00 11-12-1974 00:00:00         35
10-06-2010 00:00:00 17-09-1976 00:00:00         33

5 rows selected.

Answer 5

??? ???? ?? ????

with some_birthdays as
( 
    select date '1968-06-09' d from dual union all
    select date '1970-06-10' from dual union all
    select date '1972-06-11' from dual union all
    select date '1974-12-11' from dual union all
    select date '1976-09-17' from dual
)
select trunc(sysdate) today
, d birth_date
, floor(months_between(trunc(sysdate),d)/12) age
from some_birthdays;

Answer 6

???? ???? ???? ????? ?? ?? ?? ????? ?? ??? ???

select sysdate-to_date('30-jul-1977') from dual; 

Answer 7

?????? (??? ?????) ???????:

SELECT
  TRUNC(months_between(sysdate, per.DATE_OF_BIRTH) / 12) AS "Age"
FROM PD_PERSONS per

Answer 8

SQL>select to_char(to_date('19-11-2017','dd-mm-yyyy'),'yyyy') -  to_char(to_date('10-07-1986','dd-mm-yyyy'),'yyyy') year,
to_char(to_date('19-11-2017','dd-mm-yyyy'),'mm') -  to_char(to_date('10-07-1986','dd-mm-yyyy'),'mm') month,
to_char(to_date('19-11-2017','dd-mm-yyyy'),'dd') -  to_char(to_date('10-07-1986','dd-mm-yyyy'),'dd') day from dual;

      YEAR      MONTH        DAY
---------- ---------- ----------
        31          4          9

Answer 9

?????? ??????

SELECT ROUND((SYSDATE - TO_DATE('12-MAY-16'))/365.25, 5) AS AGE from DUAL;

?????? ????? ROUND ?????? ??? ?????? ?? ??????? ??????? ??? ???? ??.

???? ??????? ?? ??? ???? ??? ??? ????? ??? ?????? ?????? ???????? ??? ??? ???.

???? ?? ???? ???? ??????. ?? ?????????? ?????? ???????? ?? ???? ??? ????? ??????? ??? ??????? ???????? TO_DATE.

????? ??? ??? ???? ????? ??????? ?? ????? ???????? ????? ??? ??????? ?????.

Answer 10

?????? ??? ???? ?? ???? ?? (??? ????? ???? ??? ??? ????) ?? ??? ??? ?? June 4, 1996? ????? ??? ?????:

SELECT TRUNC(TO_NUMBER(SYSDATE - TO_DATE('04-06-1996')) / 365.25) AS AGE FROM DUAL;

???????: (???? 28 ???? 2019)

       AGE
----------
        22

???:

• ?SYSDATE: ???? ??? (OS) ??????? ?????? ??????
• ?TO_DATE('04-06-1996'): ????? VARCHAR (?????) ????? ?????? ?? DATE (??? SQL) .
• ?TO_NUMBER(...): ????? ??????? ??? NUMBER (??? SQL)
• ?Devide ?? 365.25: ????? ????? ??? ?? ???? ????? (4 * 0.25 = 1 ???? ?????).
• ?Trunc(...): ??????? ??? ???? ??? ?? ???

Answer 11

?????? ?????? ????? ??????

?SELECT EXTRACT(YEAR FROM APP_SUBMITTED_DATE)-EXTRACT(YEAR FROM BIRTH_DATE) FROM SOME_TABLE;

????? ????? ????? ????? ?? ??? ????.
????? ???? ??????? SYSDATE ???? ?? APP_SUBMITTED_DATE.

????????.

Answer 12

???? (SYSDATE-????? ???????) / 365 "?????" ?? ????????