Hi all,
I'm using PostgreSQL 7.3.3 on i386-pc-linux-gnu, compiled by GCC gcc (GCC) 3.3 (Debian), and I don't understand the results of the following queries:
SELECT age('2004-05-14 16:00'::timestamp,'2004-02-18 16:00'::timestamp);
age ----------------
2 mons 25 days
SELECT '2004-02-18 16:00'::timestamp+'2 mons 25 days'::interval;
?column? ---------------------
2004-05-13 16:00:00
In this case, the age from 2004-05-14 16:00 to 2004-02-18 16:00 is 2 mons 25 days, but if I add the age to the initial date, it returns one day less!?
SELECT age('2004-05-26 16:00'::timestamp,'2004-02-18 16:00'::timestamp);
age ---------------
3 mons 8 days
SELECT '2004-02-18 16:00'::timestamp+'3 mons 8 days'::interval;
?column? ---------------------
2004-05-26 16:00:00
Here, the age between 2004-05-26 16:00 and 2004-02-18 16:00 is 3 mons 8 days, and this interval added to the initial date gives the correct result!!
Best regards, Luis Sousa
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