あ、忘れてた。今晩ｶｼｬﾌﾟｼｭしようw
> SELECT created_at, age(now(), created_at) FROM accounts WHERE id=1;
created_at | age
----------------------------+--------------------------------
2017-04-15 0237.894054 | 7 years 4 days 2101.052311
(1 row)