Yikes! Who knew there was an age() function? Thanks!! Although it calls for timestamp arguments, it works with date.
Are dates usually implicitly cast to timestamp in functions?
test=# \df age
List of functions
Result | Function | Arguments
----------+----------+----------------------------------------------------
interval | age | timestamp with time zone
interval | age | timestamp with time zone, timestamp with time zone
(2 rows)
Ian A. Harding
Programmer/Analyst II
Tacoma-Pierce County Health Department
(253) 798-3549
mailto: iharding@tpchd.org
>>> lockhart@fourpalms.org 12/20/01 05:34PM >>>
> > I have checked the FAQ and other sources and learned that the difference
> > between two dates is the integer number of days. I want to know how many
> > years are between those two dates.
thomas=# select age(date 'today', date '1980-01-01'),
thomas-# extract(year from age(date 'today', date '1980-01-01'));
age | date_part
--------------------------+-----------
21 years 11 mons 20 days | 21
Is this close to what you want? The nice thing about the age() function
is that it preserves the qualitative units of month and year.
- Thomas
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